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

I’ve been looking into how common "callback URL" parameters can be weaponized to exfiltrate sensitive cloud metadata. A common payload I'm seeing in logs looks like this: ?callbackUrl=file:///home/*/.aws/credentials 🔍 What is happening? Attackers use the

Securing an application against arbitrary local file schemes requires a multi-layered defense mechanism. 1. Implement Strict Callback Whitewashing callback-url-file-3A-2F-2F-2Fhome-2F-2A-2F.aws-2Fcredentials

stores long-term access keys and secret keys in plaintext on Linux systems. I’ve been looking into how common "callback URL"

: The researchers identified that certain AWS-related integrations or local applications used a callback-url parameter that did not properly validate the scheme or path. callback-url-file-3A-2F-2F-2Fhome-2F-2A-2F.aws-2Fcredentials

When the vulnerable application processes the callback (or webhook) URL, it will: