Jwt Misconfiguration on Aws

Detecting Jwt misconfigurations in Aws environments requires a combination of static code analysis, runtime scanning, and configuration audits. The unique Aws architecture means certain Jwt vulnerabilities manifest only in specific deployment patterns.

middleBrick's Aws-specific Jwt detection capabilities include scanning for tokens that lack proper Cognito User Pool validation. When you scan an Aws API endpoint, middleBrick tests whether the Jwt validation properly checks the 'iss' claim against your specific Cognito Pool ARN. The scanner attempts to bypass authentication by swapping in Jwt tokens from different sources to see if they're accepted.

For Lambda-based Jwt validation, middleBrick examines the Lambda authorizer configuration in API Gateway. The scanner tests whether the authorizer properly validates token signatures and scopes. It also checks if the Lambda function's IAM role has excessive permissions that could be exploited if Jwt validation is bypassed.