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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"
|
