Callback-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f New! Guide
: This indicates that the instance should return the latest version of the metadata available.
The path /latest/meta-data/iam/security-credentials/ specifically relates to retrieving IAM (Identity and Access Management) security credentials for an instance. IAM is a service that enables AWS customers to manage access to AWS resources by creating and managing user identities, then granting permissions to access those resources. : This indicates that the instance should return
If you are writing a post to help others secure their infrastructure against this, consider these key sections: 1. The "Red Flag" Parameters If you are writing a post to help
: If an attacker appends the role name to this URL (e.g., .../security-credentials/admin-role ), the service returns a JSON object containing a Secret Access Key , Access Key ID , and a Token . How the Attack Works Attempting to fetch this URL can leak sensitive
The URL http://169.254.169 is a signature of a Server-Side Request Forgery (SSRF) attack targeting AWS Instance Metadata Services to steal IAM credentials [1]. Attempting to fetch this URL can leak sensitive server credentials, leading to full cloud environment compromise [1]. Immediate remediation requires blocking the request, migrating to IMDSv2, and implementing input validation to deny access to the 169.254.169.254 address, as detailed by AWS documentation.
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