Service account key file not properly set

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Metadata

Id: dab4ec72-ce2e-4732-b7c3-1757dcce01a1

Cloud Provider: Kubernetes

Platform: Kubernetes

Severity: Medium

Category: Secret Management

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Description

When a container runs kube-apiserver, the --service-account-key-file flag should be set to a PEM-encoded key file. This enables the API server to validate service account tokens presented to it. The rule flags kube-apiserver containers that do not include this flag.

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: ["--service-account-key-file=/path/to/file.pem"]
  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