Security requirement
Inspect maintenance tools to ensure the latest software updates and patches are installed.
Discussion
Maintenance tools using outdated and/or unpatched software can provide a threat vector for adversaries and result in a significant vulnerability for organizations. This requirement enhances SP 800-171 requirement 03.07.04.
Protection strategies supported
These classifications are carried from the official SP 800-172 OSCAL record and help explain the enhanced requirement’s defensive purpose.
Implementation perspective
Treat Software Updates and Patches for Maintenance Tools as an enhanced CUI protection outcome for elevated threat conditions that must be reflected in the system boundary, documented implementation, operational behavior, and assessment evidence. Pay particular attention to authorized maintenance, trusted tools, controlled support access, and protection of CUI during repair or servicing.
- Confirm the federal agency selected this enhanced requirement for the critical program or high-value asset and identify the CUI system components, services, users, and external connections in scope.
- Resolve every organization-defined parameter through an approved governance and tailoring process.
- Map each clause of the requirement to an accountable owner, implementation mechanism, and evidence source.
- Verify that inherited and shared implementations are supported by current provider evidence and responsibility boundaries.
- Collect evidence during normal operation and review changes, exceptions, and deficiencies on a risk-based cadence.
Questions to ask
- Which critical-program or high-value-asset CUI, data flows, users, and services are protected by this enhanced requirement?
- Which portions are implemented locally, inherited, shared, or not applicable, and what evidence supports that determination?
- Do the system security plan, deployed configuration, operating process, and assessment evidence tell the same story?
- What change, incident, or threshold should trigger reassessment?
Evidence and validation
- maintenance schedules and tickets
- tool approval records
- remote maintenance session logs
- maintenance personnel authorization
Common failure patterns
- vendor access left enabled permanently
- unapproved diagnostic tools introduced
- maintenance bypassing change control
- remote sessions not monitored or terminated
Assessment objectives and methods
Assessment objectives (1)
maintenance tools are inspected to ensure that the latest software updates and patches are installed.
Examine
- Maintenance policy
- procedures addressing system maintenance tools
- system maintenance tools and associated documentation
- list of personnel authorized to use maintenance tools
- maintenance tool usage records
- maintenance records
- system security plan
- other relevant documents or records
Interview
- Personnel with system maintenance responsibilities
- personnel with information security responsibilities
Test
- Processes for inspecting maintenance tools
- processes for maintenance tool updates
- mechanisms supporting and/or implementing the inspection of maintenance tools
- mechanisms supporting and/or implementing maintenance tool updates
Source NIST SP 800-53 controls
These controls are referenced by the official SP 800-172 Rev. 3 OSCAL record. Open the corresponding control pages for complete control text, enhancements, D3FEND mappings, and related learning.
Authoritative sources
- NIST SP 800-172 Revision 3 official publication ↗
- NIST SP 800-172A Revision 3 official publication ↗
- NIST OSCAL Content release used for this import ↗
Bare Metal Cyber is an independent educational publisher and is not affiliated with or endorsed by NIST. The official publications, the responsible federal agency, and the governing contract or agreement determine applicability, tailoring, assessment depth, and required implementation.