apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: disallow-automount-sa-token
  annotations:
    policies.kyverno.io/title: Disallow Automount Service Account Token
    policies.kyverno.io/category: DoD STIG
    policies.kyverno.io/severity: medium
    policies.kyverno.io/description: >-
      STIG V-242382: Pods that do not need to communicate with the
      Kubernetes API server should have automountServiceAccountToken
      set to false to prevent credential exposure.
    pod-policies.kyverno.io/autogen-controllers: none
spec:
  validationFailureAction: Audit
  background: true
  rules:
    - name: validate-automount
      skipBackgroundRequests: true
      match:
        any:
          - resources:
              kinds:
                - Pod
      exclude:
        any:
          - resources:
              namespaces:
                - kube-system
                - kube-public
                - kube-node-lease
                - kyverno
                - istio-system
                - cert-manager
                - cnpg-system
                - external-secrets
                - vault
                - rook-ceph
                - prometheus
                - argocd
                - envoy-gateway-system
                - kiali-operator
                - mariadb-system
                - redis-operator
                - reloader
                - scylla-operator
                - crowdsec
                - external-dns
                - frigate
                - gitlab
                - grafana
                - guacamole
                - home-assistant
                - mqtt
                - netbird
                - nextcloud
                - teslamate
                - unpoller
                - authentik
                - checkov
                - n8n
                - nessus
      validate:
        allowExistingViolations: true
        message: >-
          Pods should set automountServiceAccountToken to false unless API
          access is required (STIG V-242382).
        pattern:
          spec:
            automountServiceAccountToken: false