documentation_complete: true


title: 'Enable the ServiceAccount Admission Control Plugin'

{{% 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 <tt>ServiceAccount</tt> objects must be created and granted
    before pod creation is allowed, follow the documentation and create
    <tt>ServiceAccount</tt> objects as per your environment.
    Ensure that the plugin is enabled in the api-server configuration:
    <pre>$ oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'</pre>

rationale: |-
    When a pod is created, if a service account is not specified, the pod
    is automatically assigned the <i>default</i> service account in the same
    namespace. OpenShift operators should create unique service accounts
    and let the API Server manage its security tokens.

identifiers:
  cce@ocp4: CCE-83791-4


severity: medium

references:
    cis@ocp4: 1.2.12
    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: 'API server configuration contains <tt>ServiceAccount</tt>'

ocil: |-
    The ServiceAccount plugin should be enabled in the list of enabled plugins in
    the apiserver configuration:
    <pre>$ oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'</pre>

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["enable-admission-plugins"][:]'
    values:
    - value: '^ServiceAccount$'
      operation: "pattern match"
      entity_check: "at least one"