cyberstrikeus SC-49 Hardware-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 and robustness to ensure domain separation and policy enforcement for specific types of threats and environments of operation. Hardware-enforced separation and policy enforcement provide greater strength of mechanism than software-enforced separation and policy enforcement.
What to Check
- Verify SC-49 Hardware-enforced Separation and Policy Enforcement is documented in SSP
- Confirm control is operating effectively
- Review evidence of continuous monitoring for SC-49
How to Test
Step 1: Review Documentation
Examine the System Security Plan (SSP) and related artifacts for SC-49 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 encryption and network controls | cloud_audit_encryption |
| nmap | Network scanning | nmap -sV --script ssl-enum-ciphers |
Remediation Guide
Control Statement
Implement hardware-enforced separation and policy enforcement mechanisms between [organization-defined].
Implementation Guidance
System owners may require additional strength of mechanism and robustness to ensure domain separation and policy enforcement for specific types of threats and environments of operation. Hardware-enforced separation and policy enforcement provide greater strength of mechanism than software-enforced separation and policy enforcement.
Risk Assessment
| Finding | Severity | Impact |
|---|---|---|
| SC-49 Hardware-enforced Separation and Policy Enforcement not implemented | High | System and Communications Protection |
| SC-49 partially implemented | Medium | Incomplete System and Communications Protection |
CWE Categories
| CWE ID | Title |
|---|---|
| CWE-311 | Missing Encryption of Sensitive Data |
References
- NIST SP 800-53 Rev 5 - SC-49
- 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-4, SA-8, SC-50) reviewed