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

The IP address 169.254.169.254 hosts the AWS Instance Metadata Service (IMDS), a critical endpoint for retrieving IAM security credentials from EC2 instances. Exploiting this path, specifically through Server-Side Request Forgery (SSRF), allows unauthorized access to temporary credentials and risks full infrastructure compromise. To mitigate these risks, it is recommended to adopt IMDSv2, which introduces token-based authentication to prevent SSRF vulnerabilities. Read the full guide on securing your infrastructure at

: This specifies the version of the metadata service to use. As of my last update, /latest is the correct version to use. The IP address 169

Identity and Access Management (IAM) security credentials are critical for any AWS instance. These credentials define what actions an instance can perform on AWS resources. When an instance needs to interact with AWS services—be it to write to an S3 bucket, monitor metrics in CloudWatch, or perform any other action—it must do so with the appropriate permissions. Fetching IAM security credentials from the metadata service allows instances to understand their permissions without requiring hardcoded credentials. Read the full guide on securing your infrastructure

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 These credentials define what actions an instance can