Fetch-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f Repack Site
The URL appears to be related to Amazon Web Services (AWS). Let's dissect it:
iam/security-credentials/ is used specifically to retrieve the security credentials (such as temporary access keys) associated with the IAM role that an EC2 instance is launched with.
When an EC2 instance is launched, it can access the AWS Instance Metadata Service to retrieve temporary security credentials. These credentials are used to make secure requests to AWS services without needing to hard-code or store long-term access keys on the instance. The URL appears to be related to Amazon Web Services (AWS)
You can force all new instances to use IMDSv2 via:
The Amazon Elastic Compute Cloud (Amazon EC2) Instance Metadata Service (IMDS) helps customers build secure and scalable applicati... Amazon Web Services Securing the EC2 Instance Metadata Service These credentials are used to make secure requests
Server-Side Request Forgery occurs when a web application accepts a user-supplied URL, fails to validate it, and forces the backend server to make an HTTP request to that URL.
When building applications on AWS EC2 , hardcoding static AWS access keys and secret keys inside application code is a severe security risk. To avoid this, AWS introduced . Instead of hardcoding credentials, you assign a role to your EC2 instance. The underlying application automatically pulls short-lived, self-rotating credentials directly from an internal endpoint. When building applications on AWS EC2 , hardcoding
Decoding the AWS Metadata Exploit: Understanding 169.254.169.254 and SSRF
If the EC2 instance has an IAM role attached, a GET request to that URL lists all available role names. Appending a role name, e.g., /security-credentials/MyRole , returns a JSON document containing:
TOKEN=$(curl -X PUT "http://169.254.169" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600") Use code with caution.