Sr 5 2 Assessments Prior To Selection

---
name: "SR-5(2)_assessments-prior-to-selection-acceptance-modification-or-up"
description: "Assess the system, system component, or system service prior to selection, acceptance, modification, or update."
category: "configuration"
version: "5.2.0"
author: "cyberstrike-official"
tags:
  - nist
  - sp800-53
  - rev5
  - sr-5-2
  - sr
  - enhancement
tech_stack:
  - any
cwe_ids: []
chains_with:
  - CA-8
  - RA-5
  - SA-11
  - SI-7
prerequisites:
  - SR-5
severity_boost:
  CA-8: "Chain with CA-8 for comprehensive security coverage"
  RA-5: "Chain with RA-5 for comprehensive security coverage"
  SA-11: "Chain with SA-11 for comprehensive security coverage"
---

# SR-5(2) Assessments Prior to Selection, Acceptance, Modification, or Update

> **Enhancement of:** SR-5

## High-Level Description

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

Organizational personnel or independent, external entities conduct assessments of systems, components, products, tools, and services to uncover evidence of tampering, unintentional and intentional vulnerabilities, or evidence of non-compliance with supply chain controls. These include malicious code, malicious processes, defective software, backdoors, and counterfeits. Assessments can include evaluations; design proposal reviews; visual or physical inspection; static and dynamic analyses; visual, x-ray, or magnetic particle inspections; simulations; white, gray, or black box testing; fuzz testing; stress testing; and penetration testing (see [SR-6(1)](#sr-6.1) ). Evidence generated during assessments is documented for follow-on actions by organizations. The evidence generated during the organizational or independent assessments of supply chain elements may be used to improve supply chain processes and inform the supply chain risk management process. The evidence can be leveraged in follow-on assessments. Evidence and other documentation may be shared in accordance with organizational agreements.

## What to Check

- [ ] Verify SR-5(2) Assessments Prior to Selection, Acceptance, Modification, or Update is documented in SSP
- [ ] Confirm control is operating effectively
- [ ] Review evidence of continuous monitoring for SR-5(2)
- [ ] Verify enhancement builds upon base control SR-5

## How to Test

### Step 1: Review Documentation

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

| Tool          | Purpose                           | Usage |
| ------------- | --------------------------------- | ----- |
| Manual Review | Documentation and interview-based | N/A   |

## Remediation Guide

### Control Statement

Assess the system, system component, or system service prior to selection, acceptance, modification, or update.

### Implementation Guidance

Organizational personnel or independent, external entities conduct assessments of systems, components, products, tools, and services to uncover evidence of tampering, unintentional and intentional vulnerabilities, or evidence of non-compliance with supply chain controls. These include malicious code, malicious processes, defective software, backdoors, and counterfeits. Assessments can include evaluations; design proposal reviews; visual or physical inspection; static and dynamic analyses; visual, x-ray, or magnetic particle inspections; simulations; white, gray, or black box testing; fuzz testing; stress testing; and penetration testing (see [SR-6(1)](#sr-6.1) ). Evidence generated during assessments is documented for follow-on actions by organizations. The evidence generated during the organizational or independent assessments of supply chain elements may be used to improve supply chain processes and inform the supply chain risk management process. The evidence can be leveraged in follow-on assessments. Evidence and other documentation may be shared in accordance with organizational agreements.

## Risk Assessment

| Finding                                                                                     | Severity | Impact                                  |
| ------------------------------------------------------------------------------------------- | -------- | --------------------------------------- |
| SR-5(2) Assessments Prior to Selection, Acceptance, Modification, or Update not implemented | Medium   | Supply Chain Risk Management            |
| SR-5(2) partially implemented                                                               | Low      | Incomplete Supply Chain Risk Management |

## CWE Categories

| CWE ID | Title                 |
| ------ | --------------------- |
| N/A    | No direct CWE mapping |

## References

- [NIST SP 800-53 Rev 5 - SR-5(2)](https://csrc.nist.gov/projects/cprt/catalog#/cprt/framework/version/SP_800_53_5_1_1/home?element=sr-5.2)
- [NIST SP 800-53A Rev 5 (Assessment Procedures)](https://csrc.nist.gov/pubs/sp/800/53/a/r5/final)
- [NIST SP 800-53 Rev 5 Full Catalog](https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final)

## Checklist

- [ ] Control documented in SSP
- [ ] Implementation evidence collected
- [ ] Operating effectiveness validated
- [ ] Continuous monitoring in place
- [ ] Related controls (CA-8, RA-5, SA-11, SI-7) reviewed