The Hidden Gateway: Analyzing Security Implications of IMDSv2 and the curl Token Endpoint
That last bullet point is why this IP address is sacred to attackers. curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken
TOKEN=$(curl -X PUT "http://169.254.169" \ -H "X-aws-ec2-metadata-token-ttl-seconds: 21600") Use code with caution. curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken
This is an command. It requests a session token from the instance metadata service. curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken
TOKEN=$(curl -s http://169.254.169.254/latest/api/token -H "X-aws-ec2-metadata-token-ttl-seconds: 21600")