AU-9(5)_dual-authorization

DevOps & Security

Enforce dual authorization for [organization-defined] of [organization-defined].

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/NIST/SP800-53_rev5/AU_audit-and-accountability/AU-9(5)_dual-authorization/SKILL.md

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AU-9(5) Dual Authorization

Enhancement of: AU-9

High-Level Description

Family: Audit and Accountability (AU) Framework: NIST SP 800-53 Rev 5

Organizations may choose different selection options for different types of audit information. Dual authorization mechanisms (also known as two-person control) require the approval of two authorized individuals to execute audit functions. To reduce the risk of collusion, organizations consider rotating dual authorization duties to other individuals. Organizations do not require dual authorization mechanisms when immediate responses are necessary to ensure public and environmental safety.

What to Check

Verify AU-9(5) Dual Authorization is documented in SSP
Confirm control is operating effectively
Review evidence of continuous monitoring for AU-9(5)
Verify enhancement builds upon base control AU-9

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for AU-9(5) 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

Tool	Purpose	Usage
cloud-audit-mcp	Check logging configuration	`cloud_audit_logging`
AWS CLI	Review CloudTrail/CloudWatch	`aws cloudtrail describe-trails`

Remediation Guide

Control Statement

Enforce dual authorization for [organization-defined] of [organization-defined].

Implementation Guidance

Risk Assessment

Finding	Severity	Impact
AU-9(5) Dual Authorization not implemented	Medium	Audit and Accountability
AU-9(5) partially implemented	Low	Incomplete Audit and Accountability

CWE Categories

CWE ID	Title
CWE-778	Insufficient Logging

References

Checklist

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