Request-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity: Credentials-2f Hot!
However, if an application hosted on an EC2 instance is vulnerable to a Server-Side Request Forgery (SSRF) attack, this exact URI becomes the primary target for attackers seeking to hijack the instance's IAM role.
: A more secure version that requires a session token obtained through a PUT request before metadata can be queried. However, if an application hosted on an EC2
: If the application does not need to access instance metadata, disable the service entirely or use host-based firewalls (like iptables ) to block the web server user from reaching that IP. The vulnerable server blindly executes the request
The vulnerable server blindly executes the request. Because the request originates from within the EC2 instance, AWS treats it as legitimate and returns the instance's temporary security credentials. Proper handling and security practices are crucial to
: The credentials provided through this service are temporary and are meant for use by the EC2 instance to access AWS resources. Proper handling and security practices are crucial to prevent misuse.