Step 3: Accessing the Metadata Service. Once an SSRF vulnerability is identified, attackers exploit it to access the metadata endp... InstaTunnel Server-side request forgery (SSRF) via IMDSv1 metadata ...
The address 169.254.169.254 is a used by Amazon Web Services (AWS) to provide the Instance Metadata Service (IMDS) . Every EC2 instance can "talk" to this IP to learn about itself without needing an external internet connection. Step 3: Accessing the Metadata Service
The address 169.254.0.0/16 is a link‑local range. It is , but it is accessible from within the same virtual network or host. EC2 instances are automatically configured to route this IP to the metadata service. For an attacker on the outside, the only way to reach it is by tricking the victim’s own server into making the request. The address 169
By fetching data from this service, an application running on the instance can discover its: Instance ID and Type Public and Private IP addresses Security group names The "Security Credentials" Endpoint It is , but it is accessible from
When a request is made to http://169.254.169.254/latest/meta-data/iam/security-credentials/ , the response includes a JSON object containing temporary security credentials. These credentials include:
: The root directory for EC2 instance configuration.
# boto3 automatically fetches credentials from the metadata endpoint import boto3 s3 = boto3.client('s3') s3.list_buckets()