: This is a classic example of SSRF where the server is coerced into making a request to its own local filesystem.
An adversary manipulates an input field or API endpoint that accepts a redirect URL. If the backend backend systems process this input via an internal file-reader mechanism or curl request without strict validation, the application maps the string to an absolute path: file:///home/ubuntu/.aws/credentials Use code with caution. callback-url-file-3A-2F-2F-2Fhome-2F-2A-2F.aws-2Fcredentials
The end.
: The target path. In Linux systems, /home/user/.aws/credentials is the default location for the AWS Command Line Interface (CLI) and SDKs to store API keys ( aws_access_key_id and aws_secret_access_key ). The * acts as a wildcard, attempting to grab the credentials of any user on the system, regardless of the application's specific username. Why is this Targetted? (The Role of AWS Credentials) : This is a classic example of SSRF