PE 18 Location Of System Components

---
name: "PE-18_location-of-system-components"
description: "Position system components within the facility to minimize potential damage from [organization-defined] and to minimize the opportunity for unauthoriz"
category: "configuration"
version: "5.2.0"
author: "cyberstrike-official"
tags:
  - nist
  - sp800-53
  - rev5
  - pe-18
  - pe
tech_stack:
  - any
cwe_ids: []
chains_with:
  - CP-2
  - PE-5
  - PE-19
  - PE-20
  - RA-3
prerequisites: []
severity_boost:
  CP-2: "Chain with CP-2 for comprehensive security coverage"
  PE-5: "Chain with PE-5 for comprehensive security coverage"
  PE-19: "Chain with PE-19 for comprehensive security coverage"
---

# PE-18 Location of System Components

## High-Level Description

**Family:** Physical and Environmental Protection (PE)
**Framework:** NIST SP 800-53 Rev 5

Physical and environmental hazards include floods, fires, tornadoes, earthquakes, hurricanes, terrorism, vandalism, an electromagnetic pulse, electrical interference, and other forms of incoming electromagnetic radiation. Organizations consider the location of entry points where unauthorized individuals, while not being granted access, might nonetheless be near systems. Such proximity can increase the risk of unauthorized access to organizational communications using wireless packet sniffers or microphones, or unauthorized disclosure of information.

## What to Check

- [ ] Verify PE-18 Location of System Components is documented in SSP
- [ ] Confirm control is operating effectively
- [ ] Review evidence of continuous monitoring for PE-18

## How to Test

### Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for PE-18 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

Position system components within the facility to minimize potential damage from [organization-defined] and to minimize the opportunity for unauthorized access.

### Implementation Guidance

Physical and environmental hazards include floods, fires, tornadoes, earthquakes, hurricanes, terrorism, vandalism, an electromagnetic pulse, electrical interference, and other forms of incoming electromagnetic radiation. Organizations consider the location of entry points where unauthorized individuals, while not being granted access, might nonetheless be near systems. Such proximity can increase the risk of unauthorized access to organizational communications using wireless packet sniffers or microphones, or unauthorized disclosure of information.

## Risk Assessment

| Finding                                             | Severity | Impact                                           |
| --------------------------------------------------- | -------- | ------------------------------------------------ |
| PE-18 Location of System Components not implemented | Medium   | Physical and Environmental Protection            |
| PE-18 partially implemented                         | Low      | Incomplete Physical and Environmental Protection |

## CWE Categories

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

## References

- [NIST SP 800-53 Rev 5 - PE-18](https://csrc.nist.gov/projects/cprt/catalog#/cprt/framework/version/SP_800_53_5_1_1/home?element=pe-18)
- [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 (CP-2, PE-5, PE-19, PE-20, RA-3) reviewed