documentation_complete: true


title: 'Disable Token-based Authentication'

{{% 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: |-
    To ensure OpenShift does not accept token-based authentication,
    follow the OpenShift documentation and configure alternate mechanisms for
    authentication. Then, edit the API Server pod specification file
    Edit the <tt>openshift-kube-apiserver</tt> configmap
    and remove the <tt>token-auth-file</tt> parameter:
    <pre>
    "apiServerArguments":{
      ...
      "token-auth-file":[
        "/path/to/any/file"
      ],
      ...
    </pre>

rationale: |-
    The token-based authentication utilizes static tokens to authenticate
    requests to the API Server. The tokens are stored in clear-text in a file
    on the API Server, and cannot be revoked or rotated without restarting the
    API Server.

identifiers:
  cce@ocp4: CCE-83481-2


severity: high

references:
    cis@ocp4: 1.2.3
    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: '<tt>token-auth-file</tt> argument is configured'

ocil: |-
    Run the following command:
    <pre>$ oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments' | grep "token-auth-file"</pre>
    The output should be empty as OpenShift does not support token-based authentication at all.

warnings:
    - general: |-
        {{{ openshift_filtered_cluster_setting({custom_api_path: dump_path}) | indent(8) }}}

template:
    name: yamlfile_value
    vars:
        ocp_data: "true"
        filepath: {{{ openshift_filtered_path(default_api_path, default_jqfilter) }}}
        yamlpath: '.apiServerArguments["enable-admission-plugins"][:]'
        check_existence: "none_exist"
        values:
            - value: '^token-auth-file$'
              operation: "pattern match"
