Callback-url-file-3a-2f-2f-2fhome-2f-2a-2f.aws-2fcredentials !!hot!! Now

Understanding the AWS Credential Exfiltration Vulnerability: file:///home/*/.aws/credentials

It looks like you’re asking for a detailed feature explanation of a callback URL pattern that resembles: callback-url-file-3A-2F-2F-2Fhome-2F-2A-2F.aws-2Fcredentials

As they wrapped up their work, Rachel turned to Alex and said, "You know, sometimes I worry about the security of our own systems." Alert on any process reading ~/

• Alert on any process reading ~/.aws/credentials not belonging to expected owners.
• Alert on HTTP callbacks that contain file:// or data: schemes in parameters.

1. Exposure of sensitive information: The subject line seems to be exposing a potential path to sensitive AWS credentials. If an unauthorized party gains access to this file, they could use the credentials to access and manipulate AWS resources.
2. Potential for credential leakage: The fact that a callback URL is pointing to a file containing sensitive credentials raises concerns about the potential for credential leakage.
3. Insecure protocol: The use of the file protocol in the subject line is insecure, as it allows access to local files without proper authentication or authorization.

If an attacker successfully executes this SSRF attack, the impact is severe: Credential Theft : Direct exposure of permanent IAM user credentials. Account Takeover : The attacker can use these keys with the Exposure of sensitive information : The subject line

How it works: AWS generates a unique task token. You send an email or notification with a URL that includes this token. When clicked, it hits an API Gateway endpoint that triggers a Lambda to call SendTaskSuccess back to AWS. Documentation: Using callback URLs with AWS Step Functions. 3. API Gateway "POST" Request