NIST SP 800-53 Rev. 5 IA-5(15) — Gsa-Approved Products And Services

What this control requires

Using only General Services Administration-approved products and services for identity, credential, and access management, ensuring compliance with Federal Identity, Credential, and Access Management (FICAM) policies and standards. This control supports the IAM capability within the Identification and Authentication family.

In plain English

Using only General Services Administration-approved products and services for identity, credential, and access management, ensuring compliance with Federal Identity, Credential, and Access Management (FICAM) policies and standards. 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.

This control is rated high. Auditors expect a named owner, a remediation SLA, and a tooling artefact that evidences continuous operation.

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 Identification and Authentication, the assessor will trace your implementation back to the catalogue reference (Control IA-5(15)) 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.
• Access. Document the trigger, the owner and the cadence.
• Review. Document the trigger, the owner and the cadence.
• Authentication. Document the trigger, the owner and the cadence.
• Identity. Document the trigger, the owner and the cadence.
• Scope: management, authentication, only, identity, compliance, review, services, capability.

Evidence to collect

• Identity Scan. IAM / IdP exports — Entra ID, Okta, IAM Identity Center, Workspace directory — showing accounts, roles, MFA state and last sign-in.
• Policy Document. A signed and version-controlled policy / standard / procedure document.

Identity analytics (Okta, SailPoint, Access Analyzer) demonstrates least-privilege. Signed policy or standard documents the safeguard. Focus: Gsa-Approved Products And Services.

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 3.5.1 — User Identification and Authentication
• CIS Controls v8 6.1 — Establish an Access Granting Process
• ISO/IEC 27001:2022 A.5.16 — Identity management
• SOC 2 (2017 TSC) CC6.2 — Access Provisioning
• BSI C5:2020 IDM-01 — Policy for user accounts and access rights

Related controls in NIST SP 800-53 Rev. 5

• Control IA-4(2) — Supervisor Authorization
• Control IA-7 — Cryptographic Module Authentication
• Control IA-2(3) — Local Access To Privileged Accounts
• Control IA-2(4) — Local Access To Non-Privileged Accounts
• Control IA-4 — Identifier Management
• Control IA-12 — Identity Proofing

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control IA-5(15)

Topics: governance riskidentity accessprivileged accessidentity managementaccess reviewpolicy management