container_runtime

Cloud Foundry Container Runtime, versions prior to 0.28.0, deploys K8s worker nodes that contains a configuration file with IAAS credentials. A malicious user with access to the k8s nodes can obtain IAAS credentials allowing the user to escalate privileges to gain access to the IAAS account.

Cloud Foundry Container Runtime, versions prior to 0.29.0, deploys Kubernetes clusters utilize the same CA (Certificate Authority) to sign and trust certs for ETCD as used by the Kubernetes API. This could allow a user authenticated with a cluster to request a signed certificate leveraging the Kubernetes CSR capability to obtain a credential that could escalate privilege access to ETCD.