: AWS provides a metadata service that is accessible from within EC2 instances. This service provides information about the instance and is also used to retrieve temporary security credentials.
The string you provided appears to be an . It could originate from:
The attacker uses these credentials from their own machine to access AWS services, posing as the instance. How to Protect Your AWS Environment : AWS provides a metadata service that is
The base URL for the latest metadata is http://169.254.169.254/latest/meta-data/ . 2. The Role of .../iam/security-credentials/
The string request-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fmeta data-2Fiam-2Fsecurity credentials-2F is the digital footprint of an attempted or documented SSRF attack targeting cloud infrastructure. By understanding that this string represents a backdoor to private AWS credentials, engineering teams can prioritize migrating to , tightening input validation, and ensuring that internal metadata endpoints remain strictly isolated from public input. It could originate from: The attacker uses these
: A common prefix found in log formats (such as AWS CloudWatch, Nginx, or Apache logs) denoting the incoming URI path. http-3A-2F-2F : Decodes to http:// ( %3A is : , %2F is / ).
These credentials are used by the AWS SDKs and CLI to authorize actions on behalf of the instance. Example Request and Response The Role of
: This final part of the path specifies that the request is looking for IAM (Identity and Access Management) security credentials. IAM is a service that enables AWS customers to manage access to AWS resources.
http://169.254.169.254/latest/meta-data/iam/security-credentials/
A web application on the EC2 instance allows user input to define a URL, which the server then fetches (e.g., a "fetch profile picture from URL" feature).