Ensure that the --service-account-private-key-file argument is set as appropriate (Controller Manager)

Explicitly set a service account private key file for service accounts on the controller manager. To ensure that keys for service account tokens can be rotated as needed, a separate public/private key pair should be used for signing service account tokens. The private key should be specified to the controller manager with --service-account-private-key-file as appropriate.

Suggest Edits

Risk Level: High
Cloud Entity: Pods
CloudGuard Rule ID: D9.K8S.CRY.10
Covered by Spectral: Yes
Category: Compute

GSL LOGIC

KubernetesPod where labels contain [value='kube-controller-manager'] and namespace = 'kube-system' should have spec.containers with [parsedArgs contain [key like 'service-account-private-key-file' ]]

REMEDIATION

Edit the Controller Manager pod specification file $controllermanagerconf
on the master node and set the --service-account-private-
key-file parameter to the private key file for service accounts.
--service-account-private-key-file=<filename>

References

  1. https://kubernetes.io/docs/admin/kube-controller-manager/

Pods

Pods are the smallest deployable units of computing that can be created and managed in Kubernetes.A Pod is a group of one or more containers (such as Docker containers), with shared storage/network, and a specification for how to run the containers.

Compliance Frameworks

  • CIS Kubernetes Benchmark v1.20
  • CIS Kubernetes Benchmark v1.23
  • CIS Kubernetes Benchmark v1.24
  • CIS Kubernetes Benchmark v1.4.0
  • CIS Kubernetes Benchmark v1.5.1
  • CIS Kubernetes Benchmark v1.6.1
  • Kubernetes NIST.SP.800-190
  • Kubernetes v.1.13 CloudGuard Best Practices
  • Kubernetes v.1.14 CloudGuard Best Practices

Updated 7 months ago