AWS Instance Metadata Service Version 2 (IMDSv2) completely neutralizes traditional SSRF attempts. Unlike IMDSv1, which uses a simple GET request, IMDSv2 requires a session-oriented token exchange.
like public and private IP addresses.
What generated this log (e.g., WAF, reverse proxy, custom application)? AWS Instance Metadata Service Version 2 (IMDSv2) completely
: The root directory for EC2 instance configuration.
If your application must fetch external data, restrict the backend to a strict allowlist of approved domains. 3. Practice the Principle of Least Privilege What generated this log (e
The vulnerable backend server processes the request. Because the server itself is running inside the cloud environment, it has permission to talk to 169.254.169.254 .
When you query http://169.254.169.254/latest/meta-data/iam/security-credentials/ , the service returns a list of IAM role names associated with the EC2 instance. If you share with third parties
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Understanding SSRF and the AWS Instance Metadata Service The string fetch-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fmeta data-2Fiam-2Fsecurity credentials-2F represents a URL-encoded payload designed to exploit Server-Side Request Forgery (SSRF) vulnerabilities [1].