MA-3(4)_restricted-tool-use

MA-3(4) Restricted Tool Use

Enhancement of: MA-3

High-Level Description

Family: Maintenance (MA) Framework: NIST SP 800-53 Rev 5

Restricting the use of maintenance tools to only authorized personnel applies to systems that are used to carry out maintenance functions.

What to Check

• Verify MA-3(4) Restricted Tool Use is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for MA-3(4)
• Verify enhancement builds upon base control MA-3

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for MA-3(4) implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Remediation Guide

Control Statement

Restrict the use of maintenance tools to authorized personnel only.

Implementation Guidance

Restricting the use of maintenance tools to only authorized personnel applies to systems that are used to carry out maintenance functions.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - MA-3(4)
• NIST SP 800-53A Rev 5 (Assessment Procedures)
• NIST SP 800-53 Rev 5 Full Catalog

Checklist

• Control documented in SSP
• Implementation evidence collected
• Operating effectiveness validated
• Continuous monitoring in place
• Related controls (AC-3, AC-5, AC-6) reviewed