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CM-7(1) CM · Configuration Management

Periodic Review

LOW ✓ MODERATE ✓ HIGH
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Requirements NIST SOURCE

Discussion (NIST Supplemental Guidance)

Organizations review functions, ports, protocols, and services provided by systems or system components to determine the functions and services that are candidates for elimination. Such reviews are especially important during transition periods from older technologies to newer technologies (e.g., transition from IPv4 to IPv6). These technology transitions may require implementing the older and newer technologies simultaneously during the transition period and returning to minimum essential functions, ports, protocols, and services at the earliest opportunity. Organizations can either decide the relative security of the function, port, protocol, and/or service or base the security decision on the assessment of other entities. Unsecure protocols include Bluetooth, FTP, and peer-to-peer networking.

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 CM-7(1) 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 frequency at which to review the system to identify unnecessary and/or non-secure functions, ports, protocols, software, and/or services is defined;
  2. functions to be disabled or removed when deemed unnecessary or non-secure are defined;
  3. ports to be disabled or removed when deemed unnecessary or non-secure are defined;
  4. protocols to be disabled or removed when deemed unnecessary or non-secure are defined;
  5. software to be disabled or removed when deemed unnecessary or non-secure is defined;
  6. services to be disabled or removed when deemed unnecessary or non-secure are defined;
  7. the system is reviewed <CM-07(01)_ODP[01] frequency> to identify unnecessary and/or non-secure functions, ports, protocols, software, and services:
  8. <CM-07(01)_ODP[02] functions> deemed to be unnecessary and/or non-secure are disabled or removed;
  9. <CM-07(01)_ODP[03] ports> deemed to be unnecessary and/or non-secure are disabled or removed;
  10. <CM-07(01)_ODP[04] protocols> deemed to be unnecessary and/or non-secure are disabled or removed;
  11. <CM-07(01)_ODP[05] software> deemed to be unnecessary and/or non-secure is disabled or removed;
  12. <CM-07(01)_ODP[06] services> deemed to be unnecessary and/or non-secure are disabled or removed.

Examine

[SELECT FROM: Configuration management policy; procedures addressing least functionality in the system; configuration management plan; system design documentation; system configuration settings and associated documentation; common secure configuration checklists; documented reviews of functions, ports, protocols, and/or services; change control records; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with responsibilities for reviewing functions, ports, protocols, and services on the system; organizational personnel with information security responsibilities; system/network administrators; system developers].

Test

[SELECT FROM: Organizational processes for reviewing or disabling functions, ports, protocols, and services on the system; mechanisms implementing review and disabling of functions, ports, protocols, and/or services].

Overlays

Showing the OT/ICS overlay for the parent control CM-7 — see the CM-7(1) 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)
  • Included: (1) (2) (5)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (5)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for CM-7(1). 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

  • system security plan

Configuration

  • Configuration management policy
  • configuration management plan
  • system design documentation
  • system configuration settings and associated documentation
  • common secure configuration checklists

Testing

  • Organizational processes for reviewing or disabling functions, ports, protocols, and services on the system
  • mechanisms implementing review and disabling of functions, ports, protocols, and/or services

Other Records

  • procedures addressing least functionality in the system
  • documented reviews of functions, ports, protocols, and/or services
  • change control records
  • system audit records
  • other relevant documents or records