NIST SP 800-53 Rev. 5 CM-7(3) — Registration Compliance

What this control requires

Ensure system functions, ports, protocols, and services comply with organization-defined registration requirements. Maintain a formal process to manage, track, and oversee components, allowing only approved elements to minimize security risks and maintain system integrity. This control supports the Configuration Management Database (CMDB) capability within the Configuration Management family.

In plain English

Ensure system functions, ports, protocols, and services comply with organization-defined registration requirements. In practice, this means you can prove you policy management-level controls on a defined cadence.

Why it matters

SP 800-53 is the catalogue every U.S. federal authorisation (FedRAMP, FISMA, CMMC) and most regulated industries point at. A missing control surfaces as a Plan of Action & Milestones (POA&M) item that an Authorizing Official must approve before the Authority To Operate is granted or renewed.

What an auditor looks for

A 3PAO (FedRAMP) or Independent Assessor (NIST RMF) tests against NIST SP 800-53A assessment procedures. For each control they expect a documented implementation that addresses every assessment objective (Examine, Interview, Test) and an implementation summary in the System Security Plan.

Within Configuration Management, the assessor will trace your implementation back to the catalogue reference (Control CM-7(3)) and look for objective evidence on the latest two assessment cycles.

How to implement

Policy Management

Docs. Keep each policy in version-controlled Markdown alongside the code that implements it; ship a signed PDF snapshot at each annual review and link the SHA into the SoA.

Operational checklist

• Policy. Document the trigger, the owner and the cadence.
• Process. Document the trigger, the owner and the cadence.
• Security. Document the trigger, the owner and the cadence.
• Configuration. Document the trigger, the owner and the cadence.
• System. Document the trigger, the owner and the cadence.
• Scope: management, system functions, organization, only, configuration, compliance, components, services.

Evidence to collect

• Policy Document. A signed and version-controlled policy / standard / procedure document.

Signed policy or standard documents the safeguard. Focus: Registration Compliance.

Common pitfalls

• Policies that no engineer has read; the version in Confluence drifts from the version that's actually being enforced.

How it maps to other frameworks

Computed from shared tags, control component and key-operation subjects — handy when you are reconciling controls across an audit.

• NIST SP 800-171 Rev. 3 3.4.11 — Information Location
• HIPAA (45 CFR Part 164) 164.312(e)(2)(i) — Transmission Security - Integrity Controls
• ISO/IEC 27001:2022 A.5.23 — Information security for use of cloud services
• BSI C5:2020 SP-01 — Documentation, communication and provision of policies and instructions

Related controls in NIST SP 800-53 Rev. 5

• Control SA-18(2) — Inspection Of Systems Or Components
• Control SA-21(1) — Validation Of Screening
• Control CM-12 — Information Location
• Control SA-12(10) — Validate As Genuine And Not Altered
• Control SA-19 — Component Authenticity
• Control SA-4(11) — System Of Records

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control CM-7(3)

Topics: governance riskpolicy management