documentation_complete: true


title: 'Ensure Controller insecure port argument is unset'

{{% set default_jqfilter = '[.data."config.yaml" | fromjson | if .extendedArguments["port"]!=null then .extendedArguments["port"]==["0"] else true end]' %}}
{{% set default_api_path = '/api/v1/namespaces/openshift-kube-controller-manager/configmaps/config' %}}
{{% set hypershift_path = '/api/v1/namespaces/{{.hypershift_namespace_prefix}}-{{.hypershift_cluster}}/pods?labelSelector=app%3Dkube-controller-manager' %}}
{{% set hypershift_jqfilter = '[[.items[0].spec.containers[0].args[] | select(. | match("--port=[1-9]*[1-9]+") )] | length | if . == 0 then true else false end]' %}}
{{% 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: |-
    To ensure the Controller Manager service is bound to secure loopback
    address and a secure port,
    set the <tt>RotateKubeletServerCertificate</tt> option to <tt>true</tt>
    in the <tt>openshift-kube-controller-manager</tt> configmap on the master
    node(s):
    <pre>
    "extendedArguments": {
    ...
      "port": ["0"],
    ...
    </pre>
    It is also acceptable for a system to deprecate the insecure port:
    <pre>
    "extendedArguments": {
    ...
    ...
    </pre>

rationale: |-
    The Controller Manager API service is used for health and metrics
    information and is available without authentication or encryption. As such, it
    should only be bound to a localhost interface to minimize the cluster's
    attack surface.

severity: low

identifiers:
    cce@ocp4: CCE-83578-5

platform: not ocp4-on-hypershift-hosted

ocil_clause: |-
    <tt>port</tt> is not disabled

ocil: |-
    To verify that <tt>port</tt> is configured correctly,
    run the following command:
    <pre>$ oc get configmaps config -n openshift-kube-controller-manager -ojson | jq '{{{ jqfilter }}}'</pre>
    Verify that it's true in the console output (the value will be true if the insecure port is bind to loopback address or disabled) .

references:
    cis@ocp4: 1.3.5
    nerc-cip: CIP-003-8 R4.2,CIP-003-8 R6,CIP-004-6 R3,CIP-007-3 R5.1,CIP-007-3 R6.1
    nist: CM-6,CM-6(1),SC-8,SC-8(1)
    pcidss: Req-2.2
    srg: SRG-APP-000516-CTR-001325


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

template:
  name: yamlfile_value
  vars:
    ocp_data: "true"
    filepath: {{{ openshift_filtered_path(default_api_path, default_jqfilter) }}}
    yamlpath: "[:]"
    values:
      - value: "true"
        operation: "equals"
