SC-50_software-enforced-separation-and-policy-enforcement

SC-50 Software-enforced Separation and Policy Enforcement

High-Level Description

Family: System and Communications Protection (SC) Framework: NIST SP 800-53 Rev 5

System owners may require additional strength of mechanism to ensure domain separation and policy enforcement for specific types of threats and environments of operation.

What to Check

• Verify SC-50 Software-enforced Separation and Policy Enforcement is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for SC-50

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SC-50 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

Implement software-enforced separation and policy enforcement mechanisms between [organization-defined].

Implementation Guidance

System owners may require additional strength of mechanism to ensure domain separation and policy enforcement for specific types of threats and environments of operation.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - SC-50
• 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-4, SA-8, SC-2, SC-3) reviewed