ac-3-12-assert-and-enforce-application-access

name	AC-3(12)_assert-and-enforce-application-access
description	Require applications to assert, as part of the installation process, the access needed to the following system applications and functions: [organiz...
category	authorization
version	5.2.0
author	cyberstrike-official
tags	["nist","sp800-53","rev5","ac-3-12","ac","enhancement"]
tech_stack	["aws","azure","gcp","linux","windows"]
cwe_ids	["CWE-284"]
chains_with	["CM-7"]
prerequisites	["AC-3"]
severity_boost	{"CM-7":"Chain with CM-7 for comprehensive security coverage"}

AC-3(12) Assert and Enforce Application Access

Enhancement of: AC-3

High-Level Description

Family: Access Control (AC) Framework: NIST SP 800-53 Rev 5

Asserting and enforcing application access is intended to address applications that need to access existing system applications and functions, including user contacts, global positioning systems, cameras, keyboards, microphones, networks, phones, or other files.

What to Check

• Verify AC-3(12) Assert and Enforce Application Access is documented in SSP
• Validate all 3 control requirements are implemented
• Confirm control is operating effectively
• Review evidence of continuous monitoring for AC-3(12)
• Verify enhancement builds upon base control AC-3

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for AC-3(12) 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 IAM policies and access controls	cloud_audit_iam_policies
hackbrowser-mcp	Test web application access controls	browser_auth_test

Remediation Guide

Control Statement

Require applications to assert, as part of the installation process, the access needed to the following system applications and functions: [organization-defined]; Provide an enforcement mechanism to prevent unauthorized access; and Approve access changes after initial installation of the application.

Implementation Guidance