To understand the threat, we must break down the components of this payload:
This file is crucial for AWS CLI (Command Line Interface) and SDKs to access AWS services. It typically contains your AWS access keys. -template-..-2F..-2F..-2F..-2Froot-2F.aws-2Fcredentials
Replace YOUR_ACCESS_KEY_ID , YOUR_SECRET_ACCESS_KEY , YOUR_DEV_ACCESS_KEY_ID , and YOUR_DEV_SECRET_ACCESS_KEY with your actual AWS access keys. To understand the threat, we must break down
One evening, a security researcher named Sarah noticed the URL. She suspected the app wasn't properly "sanitizing" the filenames users requested. If the app simply took the string after ?file= and appended it to a file path on the server, she might be able to trick it into looking elsewhere. The Injection One evening, a security researcher named Sarah noticed
In a CI/CD environment, you might use such a path to configure AWS credentials for deployment scripts.
The vulnerability typically exists in applications that take user input (like a template name or a filename) and use it to build a path to a file on the disk without proper "sanitization."
On Linux-based systems (like Amazon EC2), the AWS CLI and SDKs store programmatic access keys in a text file located at ~/.aws/credentials . /home/username/.aws/credentials Path for the root user: /root/.aws/credentials The file typically follows this format: