AC-18(4)_restrict-configurations-by-users

AC-18(4) Restrict Configurations by Users

Enhancement of: AC-18

High-Level Description

Family: Access Control (AC) Framework: NIST SP 800-53 Rev 5

Organizational authorizations to allow selected users to configure wireless networking capabilities are enforced, in part, by the access enforcement mechanisms employed within organizational systems.

What to Check

• Verify AC-18(4) Restrict Configurations by Users is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for AC-18(4)
• Verify enhancement builds upon base control AC-18

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for AC-18(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

Identify and explicitly authorize users allowed to independently configure wireless networking capabilities.

Implementation Guidance

Organizational authorizations to allow selected users to configure wireless networking capabilities are enforced, in part, by the access enforcement mechanisms employed within organizational systems.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - AC-18(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 (SC-7, SC-15) reviewed