-file-..-2f..-2f..-2f..-2fhome-2f-2a-2f.aws-2fcredentials

This path seems to be probing for AWS credentials files located within a home directory or its subdirectories. Access to AWS credentials files can provide critical information for unauthorized access to AWS resources.

import urllib.parse

This exploit succeeds when a web application accepts user-supplied input to locate and load files without conducting strict sanitization or validation. Vulnerable Code Example (PHP) -file-..-2F..-2F..-2F..-2Fhome-2F-2A-2F.aws-2Fcredentials

Marcus didn’t think much of the log alert at first. Just another scanned path in the penetration test report: This path seems to be probing for AWS

This exploit relies on a flaw known as or Arbitrary File Read . It occurs when a web application accepts input from a user and passes it directly to a file system API without proper sanitization. Vulnerable Code Example (Node.js/Express) javascript Vulnerable Code Example (PHP) Marcus didn’t think much

Below is a blog post draft focused on this security vulnerability.