Encryption provider config is not defined

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Metadata

Id: cbd2db69-0b21-4c14-8a40-7710a50571a9

Cloud Provider: Kubernetes

Platform: Kubernetes

Severity: Medium

Category: Encryption

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Description

When kube-apiserver is used, the --encryption-provider-config flag should be set, and the referenced encryption configuration file should correctly configure encryption providers. This rule checks containers and initContainers for kube-apiserver command invocations and reports when the --encryption-provider-config flag is not present. Missing this flag and a valid encryption config can result in secrets and other sensitive data being stored unencrypted at rest.

Compliant Code Examples

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: ["--encryption-provider-config=/path/to/config/file.yaml"]
  restartPolicy: OnFailure

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver","--encryption-provider-config=/path/to/config/file.yaml"]
      args: []
  restartPolicy: OnFailure

Non-Compliant Code Examples

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: []
  restartPolicy: OnFailure