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MA-5(1) MA · Maintenance

Individuals Without Appropriate Access

LOW MODERATE ✓ HIGH
1 Overlay 2 Related Controls
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Requirements NIST SOURCE

    1. (1)Maintenance personnel who do not have needed access authorizations, clearances, or formal access approvals are escorted and supervised during the performance of maintenance and diagnostic activities on the system by approved organizational personnel who are fully cleared, have appropriate access authorizations, and are technically qualified; and
    2. (2)Prior to initiating maintenance or diagnostic activities by personnel who do not have needed access authorizations, clearances or formal access approvals, all volatile information storage components within the system are sanitized and all nonvolatile storage media are removed or physically disconnected from the system and secured; and
Discussion (NIST Supplemental Guidance)

Procedures for individuals who lack appropriate security clearances or who are not U.S. citizens are intended to deny visual and electronic access to classified or controlled unclassified information contained on organizational systems. Procedures for the use of maintenance personnel can be documented in security plans for the systems.

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 MA-5(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. alternate controls to be developed and implemented in the event that a system component cannot be sanitized, removed, or disconnected from the system are defined;
  2. procedures for the use of maintenance personnel who lack appropriate security clearances or are not U.S. citizens are implemented and include approved organizational personnel who are fully cleared, have appropriate access authorizations, and are technically qualified escorting and supervising maintenance personnel without the needed access authorization during the performance of maintenance and diagnostic activities;
  3. procedures for the use of maintenance personnel who lack appropriate security clearances or are not U.S. citizens are implemented and include all volatile information storage components within the system being sanitized and all non-volatile storage media being removed or physically disconnected from the system and secured prior to initiating maintenance or diagnostic activities;
  4. <MA-05(01)_ODP alternate controls> are developed and implemented in the event that a system cannot be sanitized, removed, or disconnected from the system.

Examine

[SELECT FROM: Maintenance policy; procedures addressing maintenance personnel; system media protection policy; physical and environmental protection policy; list of maintenance personnel requiring escort/supervision; maintenance records; access control records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with system maintenance responsibilities; organizational personnel with personnel security responsibilities; organizational personnel with physical access control responsibilities; organizational personnel with information security responsibilities; organizational personnel responsible for media sanitization; system/network administrators].

Test

[SELECT FROM: Organizational processes for managing maintenance personnel without appropriate access; mechanisms supporting and/or implementing alternative security safeguards; mechanisms supporting and/or implementing information storage component sanitization].

Overlays

Showing the OT/ICS overlay for the parent control MA-5 — see the MA-5(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)

HIGH

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

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for MA-5(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

  • Maintenance policy
  • system media protection policy
  • physical and environmental protection policy
  • system security plan

Testing

  • Organizational processes for managing maintenance personnel without appropriate access
  • mechanisms supporting and/or implementing alternative security safeguards
  • mechanisms supporting and/or implementing information storage component sanitization

Other Records

  • procedures addressing maintenance personnel
  • list of maintenance personnel requiring escort/supervision
  • maintenance records
  • access control records
  • other relevant documents or records