Mitigating the Risks of Instance Metadata in AWS EKS
Compromising a pod in a Kubernetes cluster can have disastrous consequences on resources in an AWS Elastic Kubernetes Service (EKS) account if access to the Instance Metadata service is not explicitly blocked. The Instance Metadata service is an AWS API listening on a link-local IP address. Only accessible from EC2 instances, it enables the retrieval of metadata that is used to configure or manage an instance.