← AC-3

Controlled Release

LOW MODERATE HIGH
1 Overlay 5 Related Controls
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Requirements NIST SOURCE

Release information outside of the system only if:

Discussion (NIST Supplemental Guidance)

Organizations can only directly protect information when it resides within the system. Additional controls may be needed to ensure that organizational information is adequately protected once it is transmitted outside of the system. In situations where the system is unable to determine the adequacy of the protections provided by external entities, as a mitigation measure, organizations procedurally determine whether the external systems are providing adequate controls. The means used to determine the adequacy of controls provided by external systems include conducting periodic assessments (inspections/tests), establishing agreements between the organization and its counterpart organizations, or some other process. The means used by external entities to protect the information received need not be the same as those used by the organization, but the means employed are sufficient to provide consistent adjudication of the security and privacy policy to protect the information and individuals’ privacy. Controlled release of information requires systems to implement technical or procedural means to validate the information prior to releasing it to external systems. For example, if the system passes information to a system controlled by another organization, technical means are employed to validate that the security and privacy attributes associated with the exported information are appropriate for the receiving system. Alternatively, if the system passes information to a printer in organization-controlled space, procedural means can be employed to ensure that only authorized individuals gain access to the printer.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for AC-3(9) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. the outside system or system component to which to release information is defined;
  2. controls to be provided by the outside system or system component (defined in AC-03(09)_ODP[01]) are defined;
  3. controls used to validate appropriateness of information to be released are defined;
  4. information is released outside of the system only if the receiving <AC-03(09)_ODP[01] system or system component> provides <AC-03(09)_ODP[02] controls>;
  5. information is released outside of the system only if <AC-03(09)_ODP[03] controls> are used to validate the appropriateness of the information designated for release.

Examine

[SELECT FROM: Access control policy; procedures addressing access enforcement; system design documentation; system configuration settings and associated documentation; list of security and privacy safeguards provided by receiving system or system components; list of security and privacy safeguards validating appropriateness of information designated for release; system audit records; results of period assessments (inspections/tests) of the external system; information sharing agreements; memoranda of understanding; acquisitions/contractual agreements; system security plan; privacy plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with access enforcement responsibilities; system/network administrators; organizational personnel with information security and privacy responsibilities; organizational personnel with responsibility for acquisitions/contractual agreements; legal counsel; system developers].

Test

[SELECT FROM: Mechanisms implementing access enforcement functions].

Overlays

Showing the OT/ICS overlay for the parent control AC-3 — see the AC-3(9) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

  • Base control: Included (matches standard baseline)

MODERATE

  • Base control: Included (matches standard baseline)

HIGH

  • Base control: Included (matches standard baseline)
  • Added: (11)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AC-3(9). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Access control policy
  • system security plan
  • privacy plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Mechanisms implementing access enforcement functions

Other Records

  • procedures addressing access enforcement
  • list of security and privacy safeguards provided by receiving system or system components
  • list of security and privacy safeguards validating appropriateness of information designated for release
  • system audit records
  • results of period assessments (inspections/tests) of the external system
  • information sharing agreements
  • memoranda of understanding
  • acquisitions/contractual agreements
  • other relevant documents or records