The Kubernetes Controller Manager must create unique service accounts for each work payload. (Cat I impact)
The Kubernetes Controller Manager is a background process that embeds core control loops regulating cluster system state through the API Server. Every process executed in a pod has an associated service account. By default, service accounts use the same credentials for authentication. Implementing the default settings poses a High risk to the Kubernetes Controller Manager. Setting the use-service-account-credential value lowers the attack surface by generating unique service accounts settings for each controller instance.
Change to the /etc/kubernetes/manifests directory on the Kubernetes Master Node. Run the command: grep -i use-service-account-credentials * If the setting use-service-account-credentials is not configured in the Kubernetes Controller Manager manifest file or it is set to "false", this is a finding.
Edit the Kubernetes Controller Manager manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Master Node. Set the value of "use-service-account-credentials" to "true".
The organization employs automated mechanisms to support the information system account management functions.
Automated System Account Management