SR-3(2)_limitation-of-harm

SR-3(2) Limitation of Harm

Enhancement of: SR-3

High-Level Description

Family: Supply Chain Risk Management (SR) Framework: NIST SP 800-53 Rev 5

Controls that can be implemented to reduce the probability of adversaries successfully identifying and targeting the supply chain include avoiding the purchase of custom or non-standardized configurations, employing approved vendor lists with standing reputations in industry, following pre-agreed maintenance schedules and update and patch delivery mechanisms, maintaining a contingency plan in case of a supply chain event, using procurement carve-outs that provide exclusions to commitments or obligations, using diverse delivery routes, and minimizing the time between purchase decisions and delivery.

What to Check

• Verify SR-3(2) Limitation of Harm is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for SR-3(2)
• Verify enhancement builds upon base control SR-3

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SR-3(2) 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

Employ the following controls to limit harm from potential adversaries identifying and targeting the organizational supply chain: [organization-defined].

Implementation Guidance

Controls that can be implemented to reduce the probability of adversaries successfully identifying and targeting the supply chain include avoiding the purchase of custom or non-standardized configurations, employing approved vendor lists with standing reputations in industry, following pre-agreed maintenance schedules and update and patch delivery mechanisms, maintaining a contingency plan in case of a supply chain event, using procurement carve-outs that provide exclusions to commitments or obligations, using diverse delivery routes, and minimizing the time between purchase decisions and delivery.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - SR-3(2)
• 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 (none) reviewed