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

AWS has introduced several layers of defense to prevent metadata theft. If you are managing EC2 instances, these three steps are essential: 1. Upgrade to IMDSv2

The URL http://169.254.169.254/latest/meta-data/iam/security-credentials/ is an AWS internal endpoint for the Instance Metadata Service (IMDS), which provides temporary IAM security credentials for applications on EC2 instances. While utilized for legitimate access, this endpoint is a primary target in Server-Side Request Forgery (SSRF) attacks, often mitigated by upgrading from IMDSv1 to the secure, token-based IMDSv2. For more details, visit AWS Blog . AWS has introduced several layers of defense to

This is the most effective defense. Unlike the original service (IMDSv1), requires a "Session Token." An attacker cannot simply "fetch" the URL; they must first perform a PUT request to create a token, which most SSRF vulnerabilities cannot do. Action: Force "IMDSv2 Required" on all EC2 instances. 2. Follow the Principle of Least Privilege While utilized for legitimate access, this endpoint is

fetch-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fmeta data-2Fiam-2Fsecurity credentials-2F Unlike the original service (IMDSv1), requires a "Session

2 Answers. Sorted by: 28. 169.254 is within the link-local address space: https://en.wikipedia.org/wiki/Link-local_address. It's u... Stack Overflow