Catalog Model v1.0.4 JSON Format Reference
The following is the JSON format reference for this model, which is organized hierarchically. Each entry represents the corresponding JSON property in the model's JSON format, and provides details about the semantics and use of the property. The JSON Format Outline provides a streamlined, hierarchical representation of this model's JSON format which can be used along with this reference to better understand the JSON representation of this model.
JSON Base URI http://csrc.nist.gov/ns/oscal
Description A collection of controls.
Remarks
Catalogs may use one or more group objects to subdivide the control contents of a catalog.
An OSCAL catalog model provides a structured representation of control information.
Constraints (2)
allowed value for metadata/prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- resolution-tool: The tool used to produce a resolved profile.
allowed value for metadata/link/@rel
The value must be one of the following:
- source-profile: The tool used to produce a resolved profile.
Properties (6)
Description A globally unique identifier with cross-instance scope for this catalog instance. This UUID should be changed when this document is revised.
Description Provides information about the publication and availability of the containing document.
Constraints (13)
index for role an index index-metadata-role-ids shall list values returned by targets role using keys constructed of key field(s) @id
is unique for document-id: any target value must be unique (i.e., occur only once)
is unique for prop: any target value must be unique (i.e., occur only once)
index for .//prop an index index-metadata-property-uuid shall list values returned by targets .//prop using keys constructed of key field(s) @uuid
is unique for link: any target value must be unique (i.e., occur only once)
index for role an index index-metadata-role-id shall list values returned by targets role using keys constructed of key field(s) @id
index for location an index index-metadata-location-uuid shall list values returned by targets location using keys constructed of key field(s) @uuid
index for party an index index-metadata-party-uuid shall list values returned by targets party using keys constructed of key field(s) @uuid
index for party[@type='organization'] an index index-metadata-party-organizations-uuid shall list values returned by targets party[@type='organization'] using keys constructed of key field(s) @uuid
is unique for responsible-party: any target value must be unique (i.e., occur only once)
allowed values for responsible-party/@role-id
The value may be locally defined, or one of the following:
- creator: Indicates the organization that created this content.
- prepared-by: Indicates the organization that prepared this content.
- prepared-for: Indicates the organization for which this content was created.
- content-approver: Indicates the organization responsible for all content represented in the "document".
- contact: Indicates the organization to contact for questions or support related to this content.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- keywords: The value identifies a comma-seperated listing of keywords associated with this content. These keywords may be used as search terms for indexing and other applications.
allowed values for link/@rel
The value may be locally defined, or one of the following:
- canonical: The link identifies the authoritative location for this file. Defined by RFC 6596.
- alternate: The link identifies an alternative location or format for this file. Defined by the HTML Living Standard
- latest-version: This link identifies a resource containing the latest version in the version history. Defined by RFC 5829.
- predecessor-version: This link identifies a resource containing the predecessor version in the version history. Defined by RFC 5829.
- successor-version: This link identifies a resource containing the predecessor version in the version history. Defined by RFC 5829.
Properties (14)
Description A name given to the document, which may be used by a tool for display and navigation.
Description The date and time the document was published. The date-time value must be formatted according to RFC 3339 with full time and time zone included.
Remarks
This value represents the point in time when the OSCAL document was published. Typically, this date value will be machine generated at the time the containing document is published.
In some cases, an OSCAL document may be derived from some source material in a different
format. In such a case, the published value should indicate when the OSCAL document was published, not the source material.
Where necessary, the publication date of the original source material can be captured
as a named property or custom metadata construct.
A publisher of OSCAL content can use this data point along with its siblings last-modified and version to establish a sequence of successive revisions of a given OSCAL-based publication.
The metadata for previous revisions can be represented as a revision in this object.
Description The date and time the document was last modified. The date-time value must be formatted according to RFC 3339 with full time and time zone included.
Remarks
This value represents the point in time when the OSCAL document was last updated, or at the point of creation the creation date. Typically, this date value will be machine generated at time of creation or modification.
In some cases, an OSCAL document may be derived from some source material in a different
format. In such a case, the last-modified value should indicate the modification time of the OSCAL document, not the source
material.
A publisher of OSCAL content can use this data point along with its siblings published and version to establish a sequence of successive revisions of a given OSCAL-based publication.
The metadata for previous revisions can be represented as a revision in this object.
Description A string used to distinguish the current version of the document from other previous (and future) versions.
Remarks
A version string may be a release number, sequence number, date, or other identifier suffcient to distinguish between different document versions. This version is typically set by the document owner or by the tool used to maintain the content.
While not required, it is recommended that OSCAL content authors use Semantic Versioning as a format for version strings. This allows for the easy identification of a version tree consisting of major, minor, and patch numbers.
A publisher of OSCAL content can use this data point along with its siblings published and last-modified to establish a sequence of successive revisions of a given OSCAL-based publication.
The metadata for previous revisions can be represented as a revision in this object.
Description The OSCAL model version the document was authored against.
Remarks
Indicates the version of the OSCAL model to which this data set conforms, for example
1.1.0
or 1.0.0-M1
. That can be used as a hint by a tool to indicate which version of the OSCAL XML
or JSON schema to use for validation.
(array member)
object
[1 to ∞]
Revision History Entry
Description An entry in a sequential list of revisions to the containing document in reverse chronological order (i.e., most recent previous revision first).
Remarks
While published, last-modified, oscal-version, and version are not required, values for these entries should be provided if the information
is known. For a revision entry to be considered valid, at least one of the following
items must be provided: published, last-modified, version, or a link with a rel of source
.
Constraint (1)
allowed values for link/@rel
The value may be locally defined, or one of the following:
- canonical: The link identifies the authoritative location for this file. Defined by RFC 6596.
- alternate: The link identifies an alternative location or format for this file. Defined by the HTML Living Standard
- predecessor-version: This link identifies a resource containing the predecessor version in the version history. Defined by RFC 5829.
- successor-version: This link identifies a resource containing the predecessor version in the version history. Defined by RFC 5829.
Properties (8)
Description A name given to the document revision, which may be used by a tool for display and navigation.
Description The date and time the document was published. The date-time value must be formatted according to RFC 3339 with full time and time zone included.
Remarks
This value represents the point in time when the OSCAL document was published. Typically, this date value will be machine generated at the time the containing document is published.
In some cases, an OSCAL document may be derived from some source material in a different
format. In such a case, the published value should indicate when the OSCAL document was published, not the source material.
Where necessary, the publication date of the original source material can be captured
as a named property or custom metadata construct.
A publisher of OSCAL content can use this data point along with its siblings last-modified and version to establish a sequence of successive revisions of a given OSCAL-based publication.
The metadata for previous revisions can be represented as a revision in this object.
Description The date and time the document was last modified. The date-time value must be formatted according to RFC 3339 with full time and time zone included.
Remarks
This value represents the point in time when the OSCAL document was last updated, or at the point of creation the creation date. Typically, this date value will be machine generated at time of creation or modification.
In some cases, an OSCAL document may be derived from some source material in a different
format. In such a case, the last-modified value should indicate the modification time of the OSCAL document, not the source
material.
A publisher of OSCAL content can use this data point along with its siblings published and version to establish a sequence of successive revisions of a given OSCAL-based publication.
The metadata for previous revisions can be represented as a revision in this object.
Description A string used to distinguish the current version of the document from other previous (and future) versions.
Remarks
A version string may be a release number, sequence number, date, or other identifier suffcient to distinguish between different document versions. This version is typically set by the document owner or by the tool used to maintain the content.
While not required, it is recommended that OSCAL content authors use Semantic Versioning as a format for version strings. This allows for the easy identification of a version tree consisting of major, minor, and patch numbers.
A publisher of OSCAL content can use this data point along with its siblings published and last-modified to establish a sequence of successive revisions of a given OSCAL-based publication.
The metadata for previous revisions can be represented as a revision in this object.
Description The OSCAL model version the document was authored against.
Remarks
Indicates the version of the OSCAL model to which this data set conforms, for example
1.1.0
or 1.0.0-M1
. That can be used as a hint by a tool to indicate which version of the OSCAL XML
or JSON schema to use for validation.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description Additional commentary on the containing object.
Description A document identifier qualified by an identifier scheme. A document identifier provides a globally unique identifier with a cross-instance scope that is used for a group of documents that are to be treated as different versions
of the same document. If this element does not appear, or if the value of this element
is empty, the value of "document-id" is equal to the value of the "uuid" flag of the
top-level root element.
Remarks
This element is optional, but it will always have a valid value, as if it is missing the value of "document-id" is assumed to be equal to the UUID of the root. This requirement allows for document creators to retroactively link an update to the original version, by providing a document-id on the new document that is equal to the uuid of the original document.
Properties (2)
Description Qualifies the kind of document identifier using a URI. If the scheme is not provided the value of the element will be interpreted as a string of characters.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- http://www.doi.org/: A Digital Object Identifier (DOI); use is preferred, since this allows for retrieval of a full bibliographic record.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description Defines a function assumed or expected to be assumed by a party in a specific situation.
Remarks
Permissible values to be determined closer to the application (e.g. by a receiving authority).
OSCAL has defined a set of standardized roles for consistent use in OSCAL documents. This allows tools consuming OSCAL content to infer specific semantics when these roles are used. These roles are documented in the specific contexts of their use (e.g., responsible-party, responsible-role). When using such a role, it is necessary to define these roles in this list, which will then allow such a role to be referenced.
Properties (7)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined role elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, the locally defined ID of the Role from the imported OSCAL instance must be referenced in the context of the containing
resource (e.g., import, import-component-definition, import-profile, import-ssp or
import-ap). This ID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions
of the document.
Description A name given to the role, which may be used by a tool for display and navigation.
Description A short common name, abbreviation, or acronym for the role.
Description A summary of the role's purpose and associated responsibilities.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description Additional commentary on the containing object.
Description A location, with associated metadata that can be referenced.
Constraints (3)
allowed value for prop/@name
The value may be locally defined, or the following:
- type: Characterizes the kind of location.
allowed value for prop[@name='type']/@value
The value may be locally defined, or the following:
- data-center: A location that contains computing assets. A class can be used to indicate the sub-type of data-center as primary or alternate.
allowed values for prop[@name='type' and @value='data-center']/@class
The value may be locally defined, or one of the following:
- primary: The location is a data-center used for normal operations.
- alternate: The location is a data-center used for fail-over or backup operations.
Properties (9)
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined location elsewhere in this or other OSCAL instances. The locally defined UUID of the location can be used to reference the data item locally or globally (e.g., from an importing
OSCAL instance). This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions
of the document.
Description A name given to the location, which may be used by a tool for display and navigation.
Description A postal address for the location.
Remarks
Typically, the physical address of the location will be used here. If this information is sensitive, then a mailing address can be used instead.
Properties (6)
Description Indicates the type of address.
Constraint (1)
allowed values
The value may be locally defined, or one of the following:
- home: A home address.
- work: A work address.
Description A single line of an address.
Description City, town or geographical region for the mailing address.
Description State, province or analogous geographical region for mailing address
Description Postal or ZIP code for mailing address
Description The ISO 3166-1 alpha-2 country code for the mailing address.
Constraint (1)
matches: a target (value) must match the regular expression '[A-Z]{2}'.
Description An email address as defined by RFC 5322 Section 3.4.1.
Remarks
This is a contact email associated with the location.
Description Contact number by telephone.
Remarks
A phone number used to contact the location.
Properties (2)
Description Indicates the type of phone number.
Constraint (1)
allowed values
The value may be locally defined, or one of the following:
- home: A home phone number.
- office: An office phone number.
- mobile: A mobile phone number.
Description The uniform resource locator (URL) for a web site or Internet presence associated with the location.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description Additional commentary on the containing object.
Description A responsible entity which is either a person or an organization.
Constraint (1)
allowed values for prop/@name
The value must be one of the following:
- mail-stop: A mail stop associated with the party.
- office: The name or number of the party's office.
- job-title: The formal job title of a person.
Properties (12)
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined party elsewhere in this or other OSCAL instances. The locally defined UUID of the party can be used to reference the data item locally or globally (e.g., from an importing
OSCAL instance). This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions
of the document.
Description A category describing the kind of party the object describes.
Constraint (1)
allowed values
The value must be one of the following:
- person: An individual.
- organization: A group of individuals formed for a specific purpose.
Description The full name of the party. This is typically the legal name associated with the party.
Description A short common name, abbreviation, or acronym for the party.
Description An identifier for a person or organization using a designated scheme. e.g. an Open Researcher and Contributor ID (ORCID)
Properties (2)
Description Indicates the type of external identifier.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- http://orcid.org/: The identifier is Open Researcher and Contributor ID (ORCID).
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description An email address as defined by RFC 5322 Section 3.4.1.
Remarks
This is a contact email associated with the party.
Description Contact number by telephone.
Remarks
A phone number used to contact the party.
Properties (2)
Description Indicates the type of phone number.
Constraint (1)
allowed values
The value may be locally defined, or one of the following:
- home: A home phone number.
- office: An office phone number.
- mobile: A mobile phone number.
A choice:
(array member)
object
[1 to ∞]
Address
Description A postal address for the location.
Properties (6)
Description Indicates the type of address.
Constraint (1)
allowed values
The value may be locally defined, or one of the following:
- home: A home address.
- work: A work address.
Description A single line of an address.
Description City, town or geographical region for the mailing address.
Description State, province or analogous geographical region for mailing address
Description Postal or ZIP code for mailing address
Description The ISO 3166-1 alpha-2 country code for the mailing address.
Constraint (1)
matches: a target (value) must match the regular expression '[A-Z]{2}'.
Description A machine-oriented identifier reference to a location defined in the metadata section of this or another OSCAL instance. The UUID of the location in the source OSCAL instance is sufficient to reference the data item locally or
globally (e.g., in an imported OSCAL instance).
Remarks
See the Concepts - Identifier Use page for additional information about the referenced identifier's scope.
Constraint (1)
index has keythis value must correspond to a listing in the index index-metadata-location-uuid using a key constructed of key field(s) .
Description A machine-oriented identifier reference to another party (person or organization) that this subject is associated with. The UUID of the party in the source OSCAL instance is sufficient to reference the data item locally or
globally (e.g., in an imported OSCAL instance).
Remarks
Parties of both the person or organization type can be associated with an organization using the member-of-organization.
Constraint (1)
index has keythis value must correspond to a listing in the index index-metadata-party-organizations-uuid using a key constructed of key field(s) .
Description Additional commentary on the containing object.
Description A reference to a set of organizations or persons that have responsibility for performing a referenced role in the context of the containing object.
Constraints (2)
index has keythis value must correspond to a listing in the index index-metadata-role-id using a key constructed of key field(s) @role-id
index has key for party-uuidthis value must correspond to a listing in the index index-metadata-party-uuid using a key constructed of key field(s) .
Properties (5)
Description A human-oriented identifier reference to roles served by the user.
Description A machine-oriented identifier reference to another party defined in metadata. The UUID of the party in the source OSCAL instance is sufficient to reference the data item locally or
globally (e.g., in an imported OSCAL instance).
Remarks
See the Concepts - Identifier Use page for additional information about the referenced identifier's scope.
Specifies one or more parties that are responsible for performing the associated role.
Constraint (1)
index has keythis value must correspond to a listing in the index index-metadata-party-uuid using a key constructed of key field(s) .
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description Additional commentary on the containing object.
Description Additional commentary on the containing object.
Description Parameters provide a mechanism for the dynamic assignment of value(s) in a control.
Remarks
In a catalog, a parameter is typically used as a placeholder for the future assignment
of a parameter value, although the OSCAL model allows for the direct assignment of
a value if desired by the control author. The value may be optionally used to specify one or more values. If no value is provided, then
it is expected that the value will be provided at the Profile or Implementation layer.
A parameter can include a variety of metadata options that support the future solicitation
of one or more values. A label provides a textual placeholder that can be used in a tool to solicit parameter value
input, or to display in catalog documentation. The desc provides a short description of what the parameter is used for, which can be used
in tooling to help a user understand how to use the parameter. A constraint can be used to provide criteria for the allowed values. A guideline provides a recommendation for the use of a parameter.
Constraints (2)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- alt-label: An alternate to the value provided by the parameter's label. This will typically be qualified by a class.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- aggregates: The parent parameter provides an aggregation of 2 or more other parameters, each described by this property.
Properties (11)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined parameter elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that provides a characterization of the parameter.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description **(deprecated)** Another parameter invoking this one. This construct has been deprecated and should not be used.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A short, placeholder name for the parameter, which can be used as a substitute for
a value if no value is assigned.
Remarks
The label value should be suitable for inline display in a rendered catalog.
Description Describes the purpose and use of a parameter
Description A formal or informal expression of a constraint or test
Properties (2)
Description A textual summary of the constraint to be applied.
(array member)
object
[1 to ∞]
Constraint Test
Description A test expression which is expected to be evaluated by a tool.
Properties (2)
Description A formal (executable) expression of a constraint
Description Additional commentary on the containing object.
Description A prose statement that provides a recommendation for the use of a parameter.
Property (1)
Description Prose permits multiple paragraphs, lists, tables etc.
A choice:
Description A parameter value or set of values.
Remarks
A set of values provided in a catalog can be redefined at any higher layer of OSCAL (e.g., Profile).
Description Presenting a choice among alternatives
Remarks
A set of parameter value choices, that may be picked from to set the parameter value.
A set of parameter value choices, that may be picked from to set the parameter value.
Properties (2)
Description Describes the number of selections that must occur. Without this setting, only one value should be assumed to be permitted.
Constraint (1)
allowed values
The value must be one of the following:
- one: Only one value is permitted.
- one-or-more: One or more values are permitted.
Description A value selection among several such options
Description Additional commentary on the containing object.
Description A structured information object representing a security or privacy control. Each security or privacy control within the Catalog is defined by a distinct control instance.
Remarks
Controls may be grouped using group, and controls may be partitioned using part or further enhanced (extended) using control.
A control must have a part with the name "statement", which represents the textual narrative of the control. This "statement" part must occur only once, but may have nested parts to allow for multiple paragraphs or sections of text.
Constraints (10)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- status: The status of a control. For example, a value of 'withdrawn' can indicate that the control has been withdrawn and should no longer be used.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='status']/@value
The value must be one of the following:
- withdrawn: The control is no longer used.
allowed values for link/@rel
The value may be locally defined, or one of the following:
- reference: The link cites an external resource related to this control.
- related: The link identifies another control with bearing to this control.
- required: The link identifies another control that must be present if this control is present.
- incorporated-into: The link identifies other control content where this control content is now addressed.
- moved-to: The containing control definition was moved to the referenced control.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- overview: An introduction to a control or a group of controls.
- statement: A set of control implementation requirements.
- guidance: Additional information to consider when selecting, implementing, assessing, and monitoring a control.
- assessment: **(deprecated)** Use 'assessment-method' instead.
- assessment-method: The part describes a method-based assessment over a set of assessment objects.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='statement']//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- item: An individual item within a control statement. Nested statement parts are "item" parts.
allowed values for .//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objective: **(deprecated)** Use 'assessment-objective' instead.
- assessment-objective: The part describes a set of assessment objectives. Objectives can be nested.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objects: **(deprecated)** Use 'assessment-objects' instead.
- assessment-objects: Provides a listing of assessment objects. Assessment objects appear on assessment methods.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- method: **(deprecated)** Use 'method' in the 'http://csrc.nist.gov/ns/rmf' namespace. The assessment method to use. This typically appears on parts with the name "assessment".
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- method: The assessment method to use. This typically appears on parts with the name "assessment".
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf'))
and @name='method']/@value
The value must be one of the following:
- INTERVIEW: The process of holding discussions with individuals or groups of individuals within an organization to once again, facilitate assessor understanding, achieve clarification, or obtain evidence.
- EXAMINE: The process of reviewing, inspecting, observing, studying, or analyzing one or more assessment objects (i.e., specifications, mechanisms, or activities).
- TEST: The process of exercising one or more assessment objects (i.e., activities or mechanisms) under specified conditions to compare actual with expected behavior.
Properties (8)
Description A human-oriented, locally unique identifier with instance scope that can be used to reference this control elsewhere in this and other OSCAL instances (e.g., profiles). This id should be assigned per-subject, which means it should be consistently used to identify the same control across revisions of the document.
Description A textual label that provides a sub-type or characterization of the control.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
A class can also be used in an OSCAL profile as a means to target an alteration to control
content.
Description A name given to the control, which may be used by a tool for display and navigation.
Description Parameters provide a mechanism for the dynamic assignment of value(s) in a control.
Remarks
In a catalog, a parameter is typically used as a placeholder for the future assignment
of a parameter value, although the OSCAL model allows for the direct assignment of
a value if desired by the control author. The value may be optionally used to specify one or more values. If no value is provided, then
it is expected that the value will be provided at the Profile or Implementation layer.
A parameter can include a variety of metadata options that support the future solicitation
of one or more values. A label provides a textual placeholder that can be used in a tool to solicit parameter value
input, or to display in catalog documentation. The desc provides a short description of what the parameter is used for, which can be used
in tooling to help a user understand how to use the parameter. A constraint can be used to provide criteria for the allowed values. A guideline provides a recommendation for the use of a parameter.
Constraints (2)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- alt-label: An alternate to the value provided by the parameter's label. This will typically be qualified by a class.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- aggregates: The parent parameter provides an aggregation of 2 or more other parameters, each described by this property.
Properties (11)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined parameter elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that provides a characterization of the parameter.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description **(deprecated)** Another parameter invoking this one. This construct has been deprecated and should not be used.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A short, placeholder name for the parameter, which can be used as a substitute for
a value if no value is assigned.
Remarks
The label value should be suitable for inline display in a rendered catalog.
Description Describes the purpose and use of a parameter
Description A formal or informal expression of a constraint or test
Properties (2)
Description A textual summary of the constraint to be applied.
(array member)
object
[1 to ∞]
Constraint Test
Description A test expression which is expected to be evaluated by a tool.
Properties (2)
Description A formal (executable) expression of a constraint
Description Additional commentary on the containing object.
Description A prose statement that provides a recommendation for the use of a parameter.
Property (1)
Description Prose permits multiple paragraphs, lists, tables etc.
A choice:
Description A parameter value or set of values.
Remarks
A set of values provided in a catalog can be redefined at any higher layer of OSCAL (e.g., Profile).
Description Presenting a choice among alternatives
Remarks
A set of parameter value choices, that may be picked from to set the parameter value.
A set of parameter value choices, that may be picked from to set the parameter value.
Properties (2)
Description Describes the number of selections that must occur. Without this setting, only one value should be assumed to be permitted.
Constraint (1)
allowed values
The value must be one of the following:
- one: Only one value is permitted.
- one-or-more: One or more values are permitted.
Description A value selection among several such options
Description Additional commentary on the containing object.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A partition of a control's definition or a child of another part.
Remarks
A part provides for logical partitioning of prose, and can be thought of as a grouping structure
(e.g., section). A part can have child parts allowing for arbitrary nesting of prose content (e.g., statement
hierarchy). A part can contain prop objects that allow for enriching prose text with structured name/value information.
A part can be assigned an optional id, which allows for internal and external references to the textual concept contained
within a part. A id provides a means for an OSCAL profile, or a higher layer OSCAL model to reference
a specific part within a catalog. For example, an id can be used to reference or to make modifications to a control statement in a profile.
Use of part and prop provides for a wide degree of extensibility within the OSCAL catalog model. The optional
ns provides a means to qualify a part's name, allowing for organization-specific vocabularies to be defined with clear semantics.
Any organization that extends OSCAL in this way should consistently assign a ns value that represents the organization, making a given namespace qualified name unique to that organization. This allows the combination of ns and name to always be unique and unambiguous, even when mixed with extensions from other organizations.
Each organization is responsible for governance of their own extensions, and is strongly
encouraged to publish their extensions as standards to their user community. If no
ns is provided, the name is expected to be in the "OSCAL" namespace.
To ensure a ns is unique to an organization and naming conflicts are avoided, a URI containing a
DNS or other globally defined organization name should be used. For example, if FedRAMP
and DoD both extend OSCAL, FedRAMP will use the ns http://fedramp.gov/ns/oscal, while DoD might use the ns https://defense.gov for any organization specific name.
Tools that process OSCAL content are not required to interpret unrecognized OSCAL extensions; however, OSCAL compliant tools should not modify or remove unrecognized extensions, unless there is a compelling reason to do so, such as data sensitivity.
Constraint (1)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
Properties (9)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined part elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that uniquely identifies the part's semantic type.
Description A namespace qualifying the part's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated text used in a part. This allows the semantics associated with
a given name to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description A textual label that provides a sub-type or characterization of the part's name. This can be used to further distinguish or discriminate between the semantics of
multiple parts of the same control with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
A class can also be used in an OSCAL profile as a means to target an alteration to control
content.
Description A name given to the part, which may be used by a tool for display and navigation.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description Permits multiple paragraphs, lists, tables etc.
Description A partition of a control's definition or a child of another part.
Remarks
A part provides for logical partitioning of prose, and can be thought of as a grouping structure
(e.g., section). A part can have child parts allowing for arbitrary nesting of prose content (e.g., statement
hierarchy). A part can contain prop objects that allow for enriching prose text with structured name/value information.
A part can be assigned an optional id, which allows for internal and external references to the textual concept contained
within a part. A id provides a means for an OSCAL profile, or a higher layer OSCAL model to reference
a specific part within a catalog. For example, an id can be used to reference or to make modifications to a control statement in a profile.
Use of part and prop provides for a wide degree of extensibility within the OSCAL catalog model. The optional
ns provides a means to qualify a part's name, allowing for organization-specific vocabularies to be defined with clear semantics.
Any organization that extends OSCAL in this way should consistently assign a ns value that represents the organization, making a given namespace qualified name unique to that organization. This allows the combination of ns and name to always be unique and unambiguous, even when mixed with extensions from other organizations.
Each organization is responsible for governance of their own extensions, and is strongly
encouraged to publish their extensions as standards to their user community. If no
ns is provided, the name is expected to be in the "OSCAL" namespace.
To ensure a ns is unique to an organization and naming conflicts are avoided, a URI containing a
DNS or other globally defined organization name should be used. For example, if FedRAMP
and DoD both extend OSCAL, FedRAMP will use the ns http://fedramp.gov/ns/oscal, while DoD might use the ns https://defense.gov for any organization specific name.
Tools that process OSCAL content are not required to interpret unrecognized OSCAL extensions; however, OSCAL compliant tools should not modify or remove unrecognized extensions, unless there is a compelling reason to do so, such as data sensitivity.
Constraint (1)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A structured information object representing a security or privacy control. Each security or privacy control within the Catalog is defined by a distinct control instance.
Remarks
Controls may be grouped using group, and controls may be partitioned using part or further enhanced (extended) using control.
A control must have a part with the name "statement", which represents the textual narrative of the control. This "statement" part must occur only once, but may have nested parts to allow for multiple paragraphs or sections of text.
Constraints (10)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- status: The status of a control. For example, a value of 'withdrawn' can indicate that the control has been withdrawn and should no longer be used.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='status']/@value
The value must be one of the following:
- withdrawn: The control is no longer used.
allowed values for link/@rel
The value may be locally defined, or one of the following:
- reference: The link cites an external resource related to this control.
- related: The link identifies another control with bearing to this control.
- required: The link identifies another control that must be present if this control is present.
- incorporated-into: The link identifies other control content where this control content is now addressed.
- moved-to: The containing control definition was moved to the referenced control.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- overview: An introduction to a control or a group of controls.
- statement: A set of control implementation requirements.
- guidance: Additional information to consider when selecting, implementing, assessing, and monitoring a control.
- assessment: **(deprecated)** Use 'assessment-method' instead.
- assessment-method: The part describes a method-based assessment over a set of assessment objects.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='statement']//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- item: An individual item within a control statement. Nested statement parts are "item" parts.
allowed values for .//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objective: **(deprecated)** Use 'assessment-objective' instead.
- assessment-objective: The part describes a set of assessment objectives. Objectives can be nested.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objects: **(deprecated)** Use 'assessment-objects' instead.
- assessment-objects: Provides a listing of assessment objects. Assessment objects appear on assessment methods.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- method: **(deprecated)** Use 'method' in the 'http://csrc.nist.gov/ns/rmf' namespace. The assessment method to use. This typically appears on parts with the name "assessment".
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- method: The assessment method to use. This typically appears on parts with the name "assessment".
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf'))
and @name='method']/@value
The value must be one of the following:
- INTERVIEW: The process of holding discussions with individuals or groups of individuals within an organization to once again, facilitate assessor understanding, achieve clarification, or obtain evidence.
- EXAMINE: The process of reviewing, inspecting, observing, studying, or analyzing one or more assessment objects (i.e., specifications, mechanisms, or activities).
- TEST: The process of exercising one or more assessment objects (i.e., activities or mechanisms) under specified conditions to compare actual with expected behavior.
Description A group of controls, or of groups of controls.
Remarks
Catalogs can use a group to collect related controls into a single grouping. That can be useful to group controls
into a family or other logical grouping.
A group may have its own properties, statements, parameters, and references, which are inherited
by all members of that group.
Constraints (2)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- overview: An introduction to a control or a group of controls.
Properties (8)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined group elsewhere in in this and other OSCAL instances (e.g., profiles). This id should be assigned per-subject, which means it should be consistently used to identify the same group across revisions of the document.
Description A textual label that provides a sub-type or characterization of the group.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
A class can also be used in an OSCAL profile as a means to target an alteration to control
content.
Description A name given to the group, which may be used by a tool for display and navigation.
Description Parameters provide a mechanism for the dynamic assignment of value(s) in a control.
Remarks
In a catalog, a parameter is typically used as a placeholder for the future assignment
of a parameter value, although the OSCAL model allows for the direct assignment of
a value if desired by the control author. The value may be optionally used to specify one or more values. If no value is provided, then
it is expected that the value will be provided at the Profile or Implementation layer.
A parameter can include a variety of metadata options that support the future solicitation
of one or more values. A label provides a textual placeholder that can be used in a tool to solicit parameter value
input, or to display in catalog documentation. The desc provides a short description of what the parameter is used for, which can be used
in tooling to help a user understand how to use the parameter. A constraint can be used to provide criteria for the allowed values. A guideline provides a recommendation for the use of a parameter.
Constraints (2)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- alt-label: An alternate to the value provided by the parameter's label. This will typically be qualified by a class.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- aggregates: The parent parameter provides an aggregation of 2 or more other parameters, each described by this property.
Properties (11)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined parameter elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that provides a characterization of the parameter.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description **(deprecated)** Another parameter invoking this one. This construct has been deprecated and should not be used.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A short, placeholder name for the parameter, which can be used as a substitute for
a value if no value is assigned.
Remarks
The label value should be suitable for inline display in a rendered catalog.
Description Describes the purpose and use of a parameter
Description A formal or informal expression of a constraint or test
Properties (2)
Description A textual summary of the constraint to be applied.
(array member)
object
[1 to ∞]
Constraint Test
Description A test expression which is expected to be evaluated by a tool.
Properties (2)
Description A formal (executable) expression of a constraint
Description Additional commentary on the containing object.
Description A prose statement that provides a recommendation for the use of a parameter.
Property (1)
Description Prose permits multiple paragraphs, lists, tables etc.
A choice:
Description A parameter value or set of values.
Remarks
A set of values provided in a catalog can be redefined at any higher layer of OSCAL (e.g., Profile).
Description Presenting a choice among alternatives
Remarks
A set of parameter value choices, that may be picked from to set the parameter value.
A set of parameter value choices, that may be picked from to set the parameter value.
Properties (2)
Description Describes the number of selections that must occur. Without this setting, only one value should be assumed to be permitted.
Constraint (1)
allowed values
The value must be one of the following:
- one: Only one value is permitted.
- one-or-more: One or more values are permitted.
Description A value selection among several such options
Description Additional commentary on the containing object.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A partition of a control's definition or a child of another part.
Remarks
A part provides for logical partitioning of prose, and can be thought of as a grouping structure
(e.g., section). A part can have child parts allowing for arbitrary nesting of prose content (e.g., statement
hierarchy). A part can contain prop objects that allow for enriching prose text with structured name/value information.
A part can be assigned an optional id, which allows for internal and external references to the textual concept contained
within a part. A id provides a means for an OSCAL profile, or a higher layer OSCAL model to reference
a specific part within a catalog. For example, an id can be used to reference or to make modifications to a control statement in a profile.
Use of part and prop provides for a wide degree of extensibility within the OSCAL catalog model. The optional
ns provides a means to qualify a part's name, allowing for organization-specific vocabularies to be defined with clear semantics.
Any organization that extends OSCAL in this way should consistently assign a ns value that represents the organization, making a given namespace qualified name unique to that organization. This allows the combination of ns and name to always be unique and unambiguous, even when mixed with extensions from other organizations.
Each organization is responsible for governance of their own extensions, and is strongly
encouraged to publish their extensions as standards to their user community. If no
ns is provided, the name is expected to be in the "OSCAL" namespace.
To ensure a ns is unique to an organization and naming conflicts are avoided, a URI containing a
DNS or other globally defined organization name should be used. For example, if FedRAMP
and DoD both extend OSCAL, FedRAMP will use the ns http://fedramp.gov/ns/oscal, while DoD might use the ns https://defense.gov for any organization specific name.
Tools that process OSCAL content are not required to interpret unrecognized OSCAL extensions; however, OSCAL compliant tools should not modify or remove unrecognized extensions, unless there is a compelling reason to do so, such as data sensitivity.
Constraint (1)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
Properties (9)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined part elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that uniquely identifies the part's semantic type.
Description A namespace qualifying the part's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated text used in a part. This allows the semantics associated with
a given name to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description A textual label that provides a sub-type or characterization of the part's name. This can be used to further distinguish or discriminate between the semantics of
multiple parts of the same control with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
A class can also be used in an OSCAL profile as a means to target an alteration to control
content.
Description A name given to the part, which may be used by a tool for display and navigation.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description Permits multiple paragraphs, lists, tables etc.
Description A partition of a control's definition or a child of another part.
Remarks
A part provides for logical partitioning of prose, and can be thought of as a grouping structure
(e.g., section). A part can have child parts allowing for arbitrary nesting of prose content (e.g., statement
hierarchy). A part can contain prop objects that allow for enriching prose text with structured name/value information.
A part can be assigned an optional id, which allows for internal and external references to the textual concept contained
within a part. A id provides a means for an OSCAL profile, or a higher layer OSCAL model to reference
a specific part within a catalog. For example, an id can be used to reference or to make modifications to a control statement in a profile.
Use of part and prop provides for a wide degree of extensibility within the OSCAL catalog model. The optional
ns provides a means to qualify a part's name, allowing for organization-specific vocabularies to be defined with clear semantics.
Any organization that extends OSCAL in this way should consistently assign a ns value that represents the organization, making a given namespace qualified name unique to that organization. This allows the combination of ns and name to always be unique and unambiguous, even when mixed with extensions from other organizations.
Each organization is responsible for governance of their own extensions, and is strongly
encouraged to publish their extensions as standards to their user community. If no
ns is provided, the name is expected to be in the "OSCAL" namespace.
To ensure a ns is unique to an organization and naming conflicts are avoided, a URI containing a
DNS or other globally defined organization name should be used. For example, if FedRAMP
and DoD both extend OSCAL, FedRAMP will use the ns http://fedramp.gov/ns/oscal, while DoD might use the ns https://defense.gov for any organization specific name.
Tools that process OSCAL content are not required to interpret unrecognized OSCAL extensions; however, OSCAL compliant tools should not modify or remove unrecognized extensions, unless there is a compelling reason to do so, such as data sensitivity.
Constraint (1)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
A choice:
Description A group of controls, or of groups of controls.
Remarks
Catalogs can use a group to collect related controls into a single grouping. That can be useful to group controls
into a family or other logical grouping.
A group may have its own properties, statements, parameters, and references, which are inherited
by all members of that group.
Constraints (2)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- overview: An introduction to a control or a group of controls.
Description A structured information object representing a security or privacy control. Each security or privacy control within the Catalog is defined by a distinct control instance.
Remarks
Controls may be grouped using group, and controls may be partitioned using part or further enhanced (extended) using control.
A control must have a part with the name "statement", which represents the textual narrative of the control. This "statement" part must occur only once, but may have nested parts to allow for multiple paragraphs or sections of text.
Constraints (10)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- status: The status of a control. For example, a value of 'withdrawn' can indicate that the control has been withdrawn and should no longer be used.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='status']/@value
The value must be one of the following:
- withdrawn: The control is no longer used.
allowed values for link/@rel
The value may be locally defined, or one of the following:
- reference: The link cites an external resource related to this control.
- related: The link identifies another control with bearing to this control.
- required: The link identifies another control that must be present if this control is present.
- incorporated-into: The link identifies other control content where this control content is now addressed.
- moved-to: The containing control definition was moved to the referenced control.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- overview: An introduction to a control or a group of controls.
- statement: A set of control implementation requirements.
- guidance: Additional information to consider when selecting, implementing, assessing, and monitoring a control.
- assessment: **(deprecated)** Use 'assessment-method' instead.
- assessment-method: The part describes a method-based assessment over a set of assessment objects.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='statement']//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- item: An individual item within a control statement. Nested statement parts are "item" parts.
allowed values for .//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objective: **(deprecated)** Use 'assessment-objective' instead.
- assessment-objective: The part describes a set of assessment objectives. Objectives can be nested.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objects: **(deprecated)** Use 'assessment-objects' instead.
- assessment-objects: Provides a listing of assessment objects. Assessment objects appear on assessment methods.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- method: **(deprecated)** Use 'method' in the 'http://csrc.nist.gov/ns/rmf' namespace. The assessment method to use. This typically appears on parts with the name "assessment".
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- method: The assessment method to use. This typically appears on parts with the name "assessment".
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf'))
and @name='method']/@value
The value must be one of the following:
- INTERVIEW: The process of holding discussions with individuals or groups of individuals within an organization to once again, facilitate assessor understanding, achieve clarification, or obtain evidence.
- EXAMINE: The process of reviewing, inspecting, observing, studying, or analyzing one or more assessment objects (i.e., specifications, mechanisms, or activities).
- TEST: The process of exercising one or more assessment objects (i.e., activities or mechanisms) under specified conditions to compare actual with expected behavior.
Properties (8)
Description A human-oriented, locally unique identifier with instance scope that can be used to reference this control elsewhere in this and other OSCAL instances (e.g., profiles). This id should be assigned per-subject, which means it should be consistently used to identify the same control across revisions of the document.
Description A textual label that provides a sub-type or characterization of the control.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
A class can also be used in an OSCAL profile as a means to target an alteration to control
content.
Description A name given to the control, which may be used by a tool for display and navigation.
Description Parameters provide a mechanism for the dynamic assignment of value(s) in a control.
Remarks
In a catalog, a parameter is typically used as a placeholder for the future assignment
of a parameter value, although the OSCAL model allows for the direct assignment of
a value if desired by the control author. The value may be optionally used to specify one or more values. If no value is provided, then
it is expected that the value will be provided at the Profile or Implementation layer.
A parameter can include a variety of metadata options that support the future solicitation
of one or more values. A label provides a textual placeholder that can be used in a tool to solicit parameter value
input, or to display in catalog documentation. The desc provides a short description of what the parameter is used for, which can be used
in tooling to help a user understand how to use the parameter. A constraint can be used to provide criteria for the allowed values. A guideline provides a recommendation for the use of a parameter.
Constraints (2)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- alt-label: An alternate to the value provided by the parameter's label. This will typically be qualified by a class.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- aggregates: The parent parameter provides an aggregation of 2 or more other parameters, each described by this property.
Properties (11)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined parameter elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that provides a characterization of the parameter.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description **(deprecated)** Another parameter invoking this one. This construct has been deprecated and should not be used.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A short, placeholder name for the parameter, which can be used as a substitute for
a value if no value is assigned.
Remarks
The label value should be suitable for inline display in a rendered catalog.
Description Describes the purpose and use of a parameter
Description A formal or informal expression of a constraint or test
Properties (2)
Description A textual summary of the constraint to be applied.
(array member)
object
[1 to ∞]
Constraint Test
Description A test expression which is expected to be evaluated by a tool.
Properties (2)
Description A formal (executable) expression of a constraint
Description Additional commentary on the containing object.
Description A prose statement that provides a recommendation for the use of a parameter.
Property (1)
Description Prose permits multiple paragraphs, lists, tables etc.
A choice:
Description A parameter value or set of values.
Remarks
A set of values provided in a catalog can be redefined at any higher layer of OSCAL (e.g., Profile).
Description Presenting a choice among alternatives
Remarks
A set of parameter value choices, that may be picked from to set the parameter value.
A set of parameter value choices, that may be picked from to set the parameter value.
Properties (2)
Description Describes the number of selections that must occur. Without this setting, only one value should be assumed to be permitted.
Constraint (1)
allowed values
The value must be one of the following:
- one: Only one value is permitted.
- one-or-more: One or more values are permitted.
Description A value selection among several such options
Description Additional commentary on the containing object.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A partition of a control's definition or a child of another part.
Remarks
A part provides for logical partitioning of prose, and can be thought of as a grouping structure
(e.g., section). A part can have child parts allowing for arbitrary nesting of prose content (e.g., statement
hierarchy). A part can contain prop objects that allow for enriching prose text with structured name/value information.
A part can be assigned an optional id, which allows for internal and external references to the textual concept contained
within a part. A id provides a means for an OSCAL profile, or a higher layer OSCAL model to reference
a specific part within a catalog. For example, an id can be used to reference or to make modifications to a control statement in a profile.
Use of part and prop provides for a wide degree of extensibility within the OSCAL catalog model. The optional
ns provides a means to qualify a part's name, allowing for organization-specific vocabularies to be defined with clear semantics.
Any organization that extends OSCAL in this way should consistently assign a ns value that represents the organization, making a given namespace qualified name unique to that organization. This allows the combination of ns and name to always be unique and unambiguous, even when mixed with extensions from other organizations.
Each organization is responsible for governance of their own extensions, and is strongly
encouraged to publish their extensions as standards to their user community. If no
ns is provided, the name is expected to be in the "OSCAL" namespace.
To ensure a ns is unique to an organization and naming conflicts are avoided, a URI containing a
DNS or other globally defined organization name should be used. For example, if FedRAMP
and DoD both extend OSCAL, FedRAMP will use the ns http://fedramp.gov/ns/oscal, while DoD might use the ns https://defense.gov for any organization specific name.
Tools that process OSCAL content are not required to interpret unrecognized OSCAL extensions; however, OSCAL compliant tools should not modify or remove unrecognized extensions, unless there is a compelling reason to do so, such as data sensitivity.
Constraint (1)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
Properties (9)
Description A human-oriented, locally unique identifier with cross-instance scope that can be used to reference this defined part elsewhere in this or other OSCAL instances. When referenced from another OSCAL instance, this identifier must be referenced in the context of the containing resource (e.g., import-profile). This id should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A textual label that uniquely identifies the part's semantic type.
Description A namespace qualifying the part's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated text used in a part. This allows the semantics associated with
a given name to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description A textual label that provides a sub-type or characterization of the part's name. This can be used to further distinguish or discriminate between the semantics of
multiple parts of the same control with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
A class can also be used in an OSCAL profile as a means to target an alteration to control
content.
Description A name given to the part, which may be used by a tool for display and navigation.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description Permits multiple paragraphs, lists, tables etc.
Description A partition of a control's definition or a child of another part.
Remarks
A part provides for logical partitioning of prose, and can be thought of as a grouping structure
(e.g., section). A part can have child parts allowing for arbitrary nesting of prose content (e.g., statement
hierarchy). A part can contain prop objects that allow for enriching prose text with structured name/value information.
A part can be assigned an optional id, which allows for internal and external references to the textual concept contained
within a part. A id provides a means for an OSCAL profile, or a higher layer OSCAL model to reference
a specific part within a catalog. For example, an id can be used to reference or to make modifications to a control statement in a profile.
Use of part and prop provides for a wide degree of extensibility within the OSCAL catalog model. The optional
ns provides a means to qualify a part's name, allowing for organization-specific vocabularies to be defined with clear semantics.
Any organization that extends OSCAL in this way should consistently assign a ns value that represents the organization, making a given namespace qualified name unique to that organization. This allows the combination of ns and name to always be unique and unambiguous, even when mixed with extensions from other organizations.
Each organization is responsible for governance of their own extensions, and is strongly
encouraged to publish their extensions as standards to their user community. If no
ns is provided, the name is expected to be in the "OSCAL" namespace.
To ensure a ns is unique to an organization and naming conflicts are avoided, a URI containing a
DNS or other globally defined organization name should be used. For example, if FedRAMP
and DoD both extend OSCAL, FedRAMP will use the ns http://fedramp.gov/ns/oscal, while DoD might use the ns https://defense.gov for any organization specific name.
Tools that process OSCAL content are not required to interpret unrecognized OSCAL extensions; however, OSCAL compliant tools should not modify or remove unrecognized extensions, unless there is a compelling reason to do so, such as data sensitivity.
Constraint (1)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
Description A structured information object representing a security or privacy control. Each security or privacy control within the Catalog is defined by a distinct control instance.
Remarks
Controls may be grouped using group, and controls may be partitioned using part or further enhanced (extended) using control.
A control must have a part with the name "statement", which represents the textual narrative of the control. This "statement" part must occur only once, but may have nested parts to allow for multiple paragraphs or sections of text.
Constraints (10)
allowed values for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- label: A human-readable label for the parent context, which may be rendered in place of the actual identifier for some use cases.
- sort-id: An alternative identifier, whose value is easily sortable among other such values in the document.
- alt-identifier: An alternate or aliased identifier for the parent context.
- status: The status of a control. For example, a value of 'withdrawn' can indicate that the control has been withdrawn and should no longer be used.
allowed value for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='status']/@value
The value must be one of the following:
- withdrawn: The control is no longer used.
allowed values for link/@rel
The value may be locally defined, or one of the following:
- reference: The link cites an external resource related to this control.
- related: The link identifies another control with bearing to this control.
- required: The link identifies another control that must be present if this control is present.
- incorporated-into: The link identifies other control content where this control content is now addressed.
- moved-to: The containing control definition was moved to the referenced control.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- overview: An introduction to a control or a group of controls.
- statement: A set of control implementation requirements.
- guidance: Additional information to consider when selecting, implementing, assessing, and monitoring a control.
- assessment: **(deprecated)** Use 'assessment-method' instead.
- assessment-method: The part describes a method-based assessment over a set of assessment objects.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='statement']//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- item: An individual item within a control statement. Nested statement parts are "item" parts.
allowed values for .//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objective: **(deprecated)** Use 'assessment-objective' instead.
- assessment-objective: The part describes a set of assessment objectives. Objectives can be nested.
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- objects: **(deprecated)** Use 'assessment-objects' instead.
- assessment-objects: Provides a listing of assessment objects. Assessment objects appear on assessment methods.
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name
The value must be one of the following:
- method: **(deprecated)** Use 'method' in the 'http://csrc.nist.gov/ns/rmf' namespace. The assessment method to use. This typically appears on parts with the name "assessment".
allowed value for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name
The value must be one of the following:
- method: The assessment method to use. This typically appears on parts with the name "assessment".
allowed values for part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf'))
and @name='method']/@value
The value must be one of the following:
- INTERVIEW: The process of holding discussions with individuals or groups of individuals within an organization to once again, facilitate assessor understanding, achieve clarification, or obtain evidence.
- EXAMINE: The process of reviewing, inspecting, observing, studying, or analyzing one or more assessment objects (i.e., specifications, mechanisms, or activities).
- TEST: The process of exercising one or more assessment objects (i.e., activities or mechanisms) under specified conditions to compare actual with expected behavior.
Description A collection of resources, which may be included directly or by reference.
Remarks
Provides a collection of identified resource objects that can be referenced by a link with a rel value of "reference" and an href value that is a fragment "#" followed by a reference to a reference identifier. Other
specialized link "rel" values also use this pattern when indicated in that context
of use.
Back matter including references and resources.
Constraint (1)
index for resource an index index-back-matter-resource shall list values returned by targets resource using keys constructed of key field(s) @uuid
Property (1)
(array member)
object
[1 to ∞]
Resource
Description A resource associated with content in the containing document. A resource may be directly included in the document base64 encoded or may point to one or more equivalent internet resources.
Remarks
A resource can be used in two ways. 1) it may point to an specific retrievable network
resource using a rlink, or 2) it may be included as an attachment using a base64. A resource may contain multiple rlink and base64 entries that represent alternative download locations (rlink) and attachments (base64)
for the same resource. Both rlink and base64 allow for a media-type to be specified, which is used to distinguish between different representations of
the same resource (e.g., Microsoft Word, PDF). When multiple rlink and base64 items are included for a given resource, all items must contain equivalent information.
This allows the document consumer to choose a preferred item to process based on a
the selected item's media-type. This is extremely important when the items represent OSCAL content that is represented
in alternate formats (i.e., XML, JSON, YAML), allowing the same OSCAL data to be processed
from any of the available formats indicated by the items.
When a resource includes a citation, then the title and citation properties must both be included.
Constraints (6)
allowed values for prop/@name
The value must be one of the following:
- type: Identifies the type of resource represented.
- version: For resources representing a published document, this represents the version number of that document.
- published: For resources representing a published document, this represents the publication date of that document.
matches for prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name='published']/@value: the target value must match the lexical form of the 'dateTime' data type.
allowed values for prop[@name='type']/@value
The value may be locally defined, or one of the following:
- logo: Indicates the resource is an organization's logo.
- image: Indicates the resource represents an image.
- screen-shot: Indicates the resource represents an image of screen content.
- law: Indicates the resource represents an applicable law.
- regulation: Indicates the resource represents an applicable regulation.
- standard: Indicates the resource represents an applicable standard.
- external-guidance: Indicates the resource represents applicable guidance.
- acronyms: Indicates the resource provides a list of relevant acronyms.
- citation: Indicates the resource cites relevant information.
- policy: Indicates the resource is a policy.
- procedure: Indicates the resource is a procedure.
- system-guide: Indicates the resource is guidance document related to the subject system of an SSP.
- users-guide: Indicates the resource is guidance document a user's guide or administrator's guide.
- administrators-guide: Indicates the resource is guidance document a administrator's guide.
- rules-of-behavior: Indicates the resource represents rules of behavior content.
- plan: Indicates the resource represents a plan.
- artifact: Indicates the resource represents an artifact, such as may be reviewed by an assessor.
- evidence: Indicates the resource represents evidence, such as to support an assessment findiing.
- tool-output: Indicates the resource represents output from a tool.
- raw-data: Indicates the resource represents machine data, which may require a tool or analysis for interpretation or presentation.
- interview-notes: Indicates the resource represents notes from an interview, such as may be collected during an assessment.
- questionnaire: Indicates the resource is a set of questions, possibly with responses.
- report: Indicates the resource is a report.
- agreement: Indicates the resource is a formal agreement between two or more parties.
has cardinality for rlink|base64 the cardinality of rlink|base64 is constrained: 1; maximum unbounded.
is unique for rlink: any target value must be unique (i.e., occur only once)
is unique for base64: any target value must be unique (i.e., occur only once)
Properties (9)
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined resource elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A name given to the resource, which may be used by a tool for display and navigation.
Description A short summary of the resource used to indicate the purpose of the resource.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A document identifier qualified by an identifier scheme. A document identifier provides a globally unique identifier with a cross-instance scope that is used for a group of documents that are to be treated as different versions
of the same document. If this element does not appear, or if the value of this element
is empty, the value of "document-id" is equal to the value of the "uuid" flag of the
top-level root element.
Remarks
This element is optional, but it will always have a valid value, as if it is missing the value of "document-id" is assumed to be equal to the UUID of the root. This requirement allows for document creators to retroactively link an update to the original version, by providing a document-id on the new document that is equal to the uuid of the original document.
Properties (2)
Description Qualifies the kind of document identifier using a URI. If the scheme is not provided the value of the element will be interpreted as a string of characters.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- http://www.doi.org/: A Digital Object Identifier (DOI); use is preferred, since this allows for retrieval of a full bibliographic record.
Description A citation consisting of end note text and optional structured bibliographic data.
Remarks
The text is used to define the endnote text, without any required bibliographic structure.
If structured bibliographic data is needed, then the biblio can be used for this purpose.
A biblio can be used to capture a structured bibliographical citation in an appropriate format.
Properties (3)
Description A line of citation text.
Description An attribute, characteristic, or quality of the containing object expressed as a namespace qualified name/value pair. The value of a property is a simple scalar value, which may be expressed as a list of values.
Remarks
Properties permit the deployment and management of arbitrary controlled values, within OSCAL objects. A property can be included for any purpose useful to an application or implementation. Typically, properties will be used to sort, filter, select, order, and arrange OSCAL content objects, to relate OSCAL objects to one another, or to associate an OSCAL object to class hierarchies, taxonomies, or external authorities. Thus, the lexical composition of properties may be constrained by external processes to ensure consistency.
Property allows for associated remarks that describe why the specific property value was applied to the containing object, or the significance of the value in the context of the containing object.
Properties (6)
Description A textual label that uniquely identifies a specific attribute, characteristic, or quality of the property's containing object.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- marking: A label or descriptor that is tied to a sensitivity or classification marking system. An optional class can be used to define the specific marking system used for the associated value.
Description A machine-oriented, globally unique identifier with cross-instance scope that can be used to reference this defined property elsewhere in this or other OSCAL instances. This UUID should be assigned per-subject, which means it should be consistently used to identify the same subject across revisions of the document.
Description A namespace qualifying the property's name. This allows different organizations to associate distinct semantics with the same name.
Remarks
Provides a means to segment the value space for the name, so that different organizations and individuals can assert control over the allowed
names and associated values used in a property. This allows the semantics associated
with a given name/value pair to be defined on an organization-by-organization basis.
An organization MUST use a URI that they have control over. e.g., a domain registered to the organization in a URI, a registered uniform resource names (URN) namespace.
When a ns is not provided, its value should be assumed to be http://csrc.nist.gov/ns/oscal and the name should be a name defined by the associated OSCAL model.
Description Indicates the value of the attribute, characteristic, or quality.
Description A textual label that provides a sub-type or characterization of the property's name. This can be used to further distinguish or discriminate between the semantics of
multiple properties of the same object with the same name and ns.
Remarks
A class can be used in validation rules to express extra constraints over named items of
a specific class value.
Description Additional commentary on the containing object.
Description A reference to a local or remote resource
Remarks
To provide a cryptographic hash for a remote target resource, a local reference to
a back matter resource is needed. The resource allows one or more hash values to be provided using the rlink/hash object.
The OSCAL link is a roughly based on the HTML link element.
Constraints (3)
matches for .[@rel=('reference') and starts-with(@href,'#')]/@href: the target value must match the lexical form of the 'uri-reference' data type.
index has key for .[@rel=('reference') and starts-with(@href,'#')]this value must correspond to a listing in the index index-back-matter-resource using a key constructed of key field(s) @href
matches for .[@rel=('reference') and not(starts-with(@href,'#'))]/@href: the target value must match the lexical form of the 'uri' data type.
Properties (4)
Description A resolvable URL reference to a resource.
Remarks
The value of the href can be an internet resource, or a local reference using a fragment e.g. #fragment
that points to a back-matter resource in the same document.
If a local reference using a fragment is used, this will be indicated by a fragment
"#" followed by an identifier which references an identified resource in the document's back-matter or another object that is within the scope of the containing OSCAL document.
If an internet resource is used, the href value will be an absolute or relative URI pointing to the location of the referenced
resource. A relative URI will be resolved relative to the location of the document
containing the link.
Description Describes the type of relationship provided by the link. This can be an indicator of the link's purpose.
Constraint (1)
allowed value
The value may be locally defined, or the following:
- reference: Reference
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
The media-type provides a hint about the content model of the referenced resource. A valid entry
from the IANA Media Types registry SHOULD be used.
Description A textual label to associate with the link, which may be used for presentation in a tool.
(array member)
object
[1 to ∞]
Resource link
Description A pointer to an external resource with an optional hash for verification and change detection.
Remarks
This construct is different from link, which makes no provision for a hash or formal title.
Multiple rlink can be included for a resource. In such a case, all provided rlink items are intended to be equivalent in content, but may differ in structure. A media-type is used to identify the format of a given rlink, and can be used to differentiate
a items in a collection of rlinks. The media-type also provides a hint to the OSCAL document consumer about the structure of the resource
referenced by the rlink.
Properties (3)
Description A resolvable URI reference to a resource.
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
Description A representation of a cryptographic digest generated over a resource using a specified hash algorithm.
Remarks
A hash value can be used to authenticate that a referenced resource is the same resources as was pointed to by the author of the reference.
When appearing as part of a resource/rlink, the hash applies to the resource referenced by the href.
Properties (2)
Description Method by which a hash is derived
Remarks
Any other value used MUST be a value defined in the W3C XML Security Algorithm Cross-Reference Digest Methods (W3C, April 2013) or RFC 6931 Section 2.1.5 New SHA Functions.
Constraint (1)
allowed values
The value may be locally defined, or one of the following:
- SHA-224: The SHA-224 algorithm as defined by NIST FIPS 180-4.
- SHA-256: The SHA-256 algorithm as defined by NIST FIPS 180-4.
- SHA-384: The SHA-384 algorithm as defined by NIST FIPS 180-4.
- SHA-512: The SHA-512 algorithm as defined by NIST FIPS 180-4.
- SHA3-224: The SHA3-224 algorithm as defined by NIST FIPS 202.
- SHA3-256: The SHA3-256 algorithm as defined by NIST FIPS 202.
- SHA3-384: The SHA3-384 algorithm as defined by NIST FIPS 202.
- SHA3-512: The SHA3-512 algorithm as defined by NIST FIPS 202.
Description The Base64 alphabet in RFC 2045 - aligned with XSD.
Properties (3)
Description Name of the file before it was encoded as Base64 to be embedded in a resource. This is the name that will be assigned to the file when the file is decoded.
Description Specifies a media type as defined by the Internet Assigned Numbers Authority (IANA) Media Types Registry.
Remarks
The IANA Media Types Registry should be used, but currently there is no official media
type for YAML. OSCAL documents should specify application/yaml for general YAML content, or application/oscal+yaml for YAML-based OSCAL content. This approach aligns with use of a structured name
suffix, per RFC 6838 Section 4.2.8.
Description Additional commentary on the containing object.