Callback-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f __exclusive__

A link-local address accessible only from within the virtual machine.

The attacker provides the URL: http://169.254.169.254/latest/meta-data/iam/security-credentials/

Using these credentials, the attacker may be able to access S3 buckets, databases, or other AWS services depending on the permissions of the IAM role. A link-local address accessible only from within the

: Applications running on the EC2 instance can then use these temporary credentials to make secure requests to AWS services.

Only the cloud server itself can talk to this address. It holds data about the server. The Core Danger: SSRF Attacks Only the cloud server itself can talk to this address

Follow the principle of least privilege.

The string callback-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fmeta data-2Fiam-2Fsecurity credentials-2F is a URL-encoded payload typically used in attacks. It targets the cloud instance metadata service (IMDS) to steal sensitive AWS credentials. What is the AWS Metadata Service? The string callback-url-http-3A-2F-2F169

Ensure your IAM Roles follow the principle of least privilege. Even if an attacker steals the credentials, they cannot access everything.

This report outlines a critical security vulnerability involving a Server-Side Request Forgery (SSRF) attack targeting the Amazon Web Services (AWS) Instance Metadata Service (IMDS) 1. Executive Summary The string callback-url=http://169.254.169

The local metadata service responds to the web server with the temporary IAM credentials. The web server then inadvertently displays or leaks these credentials back to the attacker in the HTTP response.