
title: Ensure authorization-mode Node is configured

{{% set default_jqfilter = '.data."config.yaml" | fromjson' %}}
{{% set default_api_path = '/api/v1/namespaces/openshift-kube-apiserver/configmaps/config' %}}
{{% set hypershift_path = '/api/v1/namespaces/{{.hypershift_namespace_prefix}}-{{.hypershift_cluster}}/configmaps/kas-config' %}}
{{% set hypershift_jqfilter = '.data."config.json" | fromjson' %}}
{{% set custom_api_path = '{{if ne .hypershift_cluster "None"}}' ~ hypershift_path ~ '{{else}}' ~  default_api_path ~ '{{end}}' %}}
{{% set custom_jqfilter = '{{if ne .hypershift_cluster "None"}}' ~ hypershift_jqfilter ~ '{{else}}' ~  default_jqfilter ~ '{{end}}' %}}
{{% set dump_path = default_api_path ~ ',' ~ default_jqfilter ~ ',' ~ custom_jqfilter %}}

description: 'Restrict kubelet nodes to reading only objects associated with them.'

rationale: |-
  The Node authorization mode only allows kubelets to read Secret,
  ConfigMap, PersistentVolume, and PersistentVolumeClaim objects
  associated with their nodes.

identifiers:
  cce@ocp4: CCE-83889-6


severity: medium

references:
    cis@ocp4: 1.2.8
    nerc-cip: CIP-003-8 R6,CIP-004-6 R3,CIP-007-3 R6.1
    nist: CM-6,CM-6(1)
    pcidss: Req-2.2
    srg: SRG-APP-000516-CTR-001325

platform: not ocp4-on-hypershift-hosted

ocil_clause: 'The Node authorization-mode is configured and enabled'

ocil: |-
    To verify that Node authorization mode is enabled, run the following command:
    <pre>$ oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | grep '"authorization-mode":\[[^]]*"Node"'</pre>
    The output should show that the "authorization-mode" list contains the "Node" authorizer.

warnings:
- general: |-
    {{{ openshift_filtered_cluster_setting({custom_api_path: dump_path}) | indent(4) }}}

template:
  name: yamlfile_value
  vars:
    ocp_data: "true"
    entity_check: "at least one"
    filepath: {{{ openshift_filtered_path(default_api_path, default_jqfilter) }}}
    yamlpath: '.apiServerArguments["authorization-mode"][:]'
    values:
    - value: 'Node'
      operation: "pattern match"
      type: "string"
      entity_check: "at least one"
