restrict-rbac-subjects.yaml

# Copyright 2024 Google LLC
#
# This is “Software” that is licensed under the “General Software” section of
# the Service Specific Terms (https://cloud.google.com/terms/service-terms) for
# usage in accordance with the following “Scope of Use”: This file may only be
# used on an Anthos cluster, including any associated ci/cd use. “Anthos
# cluster” is defined as “A Cluster (of any kind) registered to a fleet project
# where the Anthos API is enabled”.
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictRbacSubjects
metadata:
  name: nist-sp-800-190-restrict-rbac-subjects
  labels:
    policycontroller.gke.io/bundleName: nist-sp-800-190
  annotations:
    policycontroller.gke.io/bundleVersion: "202403.0"
    policycontroller.gke.io/constraintData: |-
      "{
        bundleName: 'nist-sp-800-190',
        bundleDisplayName: 'NIST SP 800-190',
        bundleLink: 'https://cloud.google.com/anthos-config-management/docs/how-to/using-nist-sp-800-190',
        bundleVersion: '202403.0',
        bundleDescription: 'Use the NIST SP 800-190 policy bundle with Policy Controller to evaluate the compliance of your cluster resources against some aspects of the NIST SP 800-190 Appendix B controls.',
        controlNumbers: '[AC-2,AC-3,IA-2,IA-4,IA-5,MA-4]',
        severity: 'UNSPECIFIED',
        description: 'Restricts the use of names in RBAC subjects to permitted values.',
        remediation: 'Cannot use names in RBAC bindings other than permitted values. Remove the restricted RBAC subject entry or add the name to the `allowedSubjects` list. See “Using RBAC Authorization” for more information: https://kubernetes.io/docs/reference/access-authn-authz/rbac/#user-facing-roles',
        minimumTemplateLibraryVersion: '1.14.0',
        constraintHash: '057797f13d10a8f3a6c7e9143dded0944d3adf8b097acc7f9e818829ddc8d013'
      }"
spec:
  enforcementAction: dryrun
  match:
    kinds:
      - apiGroups:
          - rbac.authorization.k8s.io
        kinds:
          - RoleBinding
          - ClusterRoleBinding
    excludedNamespaces: # Applicable only to RoleBindings
      - kube-system
      - apigee
      - apigee-system
  parameters:
    allowedSubjects:
      # Permit Google Groups for RBAC: https://cloud.google.com/kubernetes-engine/docs/how-to/google-groups-rbac
      # Uncomment the following line and put your domain name after '@'
      # - name: "gke-security-groups@[yourdomain.com]"
      # Example: Permit @google.com email domain
      - name: ^.+@google.com$ # Update to your email domain
        regexMatch: true
      # Permit Google Service Agents
      - name: ^.+@gcp-sa-[a-z-]+.iam.gserviceaccount.com$
        regexMatch: true
      - name: ^.+@system.gserviceaccount.com$
        regexMatch: true
      # Permit selected patterns
      - name: ^system:.+$
        regexMatch: true
      - name: ^.+-controller$
        regexMatch: true
      - name: ^istiod-asm-[0-9]{4}-[0-9]$
        regexMatch: true
      - name: ^preflightcheck-operator-[0-9].[0-9]{2}.[0-9]+$
        regexMatch: true
      - name: ^capi-controller-manager-[0-9].[0-9]{2}.[0-9]+$
        regexMatch: true
      - name: ^capi-kubeadm-bootstrap-system-[0-9].[0-9]{2}.[0-9]+$
        regexMatch: true
      - name: ^capi-kubeadm-bootstrap-manager-rolebinding-[0-9].[0-9]{2}.[0-9]+$
        regexMatch: true
      - name: ^cap-controller-manager-[0-9].[0-9]{2}.[0-9]+$
        regexMatch: true
      - name: ^anthos-cluster-operator-[0-9].[0-9]{2}.[0-9]+$
        regexMatch: true
      # for Apigee
      - name: ^apigee.*$
        regexMatch: true
      # Permit Config Sync root and namespace reconcilers
      - name: ^(root|ns)-reconciler-.+$
        regexMatch: true
      # Permit selected names
      - name: antrea-cpha
      - name: bootstrap-signer
      - name: canonical-service-account
      - name: cilium
      - name: cloud-provider
      - name: cluster-autoscaler
      - name: config-management-operator
      - name: connect-agent-sa
      - name: default
      - name: event-exporter-sa
      - name: gatekeeper-admin
      - name: generic-garbage-collector
      - name: gke-metadata-server
      - name: gke-metrics-agent
      - name: horizontal-pod-autoscaler
      - name: istio-reader-service-account
      - name: istiod-service-account
      - name: konnectivity-agent-cpha
      - name: kube-apiserver
      - name: kube-controller-manager
      - name: kube-dns
      - name: kube-dns-autoscaler
      - name: kube-proxy
      - name: kube-scheduler
      - name: kubelet
      - name: kubelet-bootstrap
      - name: metrics-server
      - name: monitor
      - name: netd
      - name: pdcsi-node-sa
      - name: persistent-volume-binder
      - name: pod-garbage-collector
      - name: reconciler-manager
      - name: resource-group-sa
      - name: root-ca-cert-publisher
      - name: root-reconciler
      - name: token-cleaner
      - name: stackdriver-prometheus-scrape
      - name: stackdriver-operator
      - name: cert-manager
      - name: edge-sa
      - name: vmruntime-vmruntime-controller-manager
      - name: cert-manager
      - name: clientconfig-operator
      - name: localpv
      - name: metrics-server-operator
      - name: cert-manager-webhook
      - name: sp-controller-manager
      - name: core-dns-autoscale
      - name: metadata-agent
      - name: cert-manager-cainjector
      - name: metallb-speaker
      - name: istio-ingressgateway-service-account
      - name: lifecycle-controllers-manager
      - name: metallb-speaker
      - name: ais-manager
      - name: ansible-runner
      - name: healthcheck-metrics-collector
      - name: core-dns-autoscaler
      - name: lifecycle-controllers-manager
      - name: healthcheck-metrics-collector
      - name: stackdriver-log-forwarder
      - name: coredns
      - name: lifecycle-controllers-deployer
      - name: capi-controller-manager
      - name: cilium-operator
      - name: kube-state-metrics
      - name: istio-cni
      - name: istio-cni-repair-rolebinding
      - name: mdp-controller
      - name: fluentbit-gke
      - name: admission-webhook
      - name: operator
      - name: collector
      - name: cilium-win
      - name: maintenance-handler
      - name: filestorecsi-node-sa
      - name: gcsfusecsi-node-sa
      - name: pkgextract-service
      - name: pkgextract-cleanup-service
      - name: prometheus-scrape
      - name: calico-typha-horizontal-autoscaler
      - name: prometheus
      - name: user-apiserver-metrics-scrape
      - name: bigip-ctlr
      - name: calico-cni-sa
      - name: calico-cni-plugin
      - name: coredns-autoscaler
      - name: calico-sa
      - name: calico-typha
      - name: konnectivity-agent-autoscaler
      - name: load-balancer-f5
      - name: vsphere-csi-node
      - name: csi-snapshot-webhook
      - name: vsphere-legacy-cloud-provider
      - name: legacy-service-account-token-cleaner
      - name: container-watcher-pod-reader