
IAM Policy Validator for AWS CloudFormation integrated with GitHub Actions automates validation of IAM policies to detect security misconfigurations early in the development lifecycle.


<div><p>This article explains how to automate IAM policy validation using the IAM Policy Validator for CloudFormation and GitHub Actions to catch security misconfigurations early in development.</p><ul><li>cfn-policy-validator tool parses IAM policies and runs them through IAM Access Analyzer checks</li><li>GitHub Actions workflows automate validation at code check-in, shifting security left</li><li>Uses GitHub OIDC provider with IAM identity provider for secure credential vending</li><li>Workflow checks out code, configures AWS credentials, installs validator, and validates templates</li><li>Example detects wildcard principals in trust policies allowing external access</li><li>Remediation involves replacing wildcards with specific account principals</li><li>Green checkmark indicates successful validation with no blocking findings</li></ul><p>This approach enables teams to identify and fix IAM policy misconfigurations automatically before deployment, improving security posture and accelerating development workflows.</p></div>


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