CA-3(6)_transfer-authorizations

DevOps & Security

Verify that individuals or systems transferring data between interconnecting systems have the requisite authorizations (i.e., write permissions or pri

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/NIST/SP800-53_rev5/CA_assessment-authorization-and-monitoring/CA-3(6)_transfer-authorizations/SKILL.md

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CA-3(6) Transfer Authorizations

Enhancement of: CA-3

High-Level Description

Family: Assessment, Authorization, and Monitoring (CA) Framework: NIST SP 800-53 Rev 5

To prevent unauthorized individuals and systems from making information transfers to protected systems, the protected system verifies—via independent means— whether the individual or system attempting to transfer information is authorized to do so. Verification of the authorization to transfer information also applies to control plane traffic (e.g., routing and DNS) and services (e.g., authenticated SMTP relays).

What to Check

Verify CA-3(6) Transfer Authorizations is documented in SSP
Confirm control is operating effectively
Review evidence of continuous monitoring for CA-3(6)
Verify enhancement builds upon base control CA-3

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for CA-3(6) 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
Manual Review	Documentation and interview-based	N/A

Remediation Guide

Control Statement

Verify that individuals or systems transferring data between interconnecting systems have the requisite authorizations (i.e., write permissions or privileges) prior to accepting such data.

Implementation Guidance

Risk Assessment

Finding	Severity	Impact
CA-3(6) Transfer Authorizations not implemented	Medium	Assessment, Authorization, and Monitoring
CA-3(6) partially implemented	Low	Incomplete Assessment, Authorization, and Monitoring

CWE Categories

CWE ID	Title
N/A	No direct CWE mapping

References

Checklist

Control documented in SSP
Implementation evidence collected
Operating effectiveness validated
Continuous monitoring in place
Related controls (AC-2, AC-3, AC-4) reviewed