Control: ClusterRoleBinding subjects should not actively use default service accounts

powerpipe control run kubernetes_compliance.control.cluster_role_binding_default_service_account_binding_not_active

powerpipe login
powerpipe control run kubernetes_compliance.control.cluster_role_binding_default_service_account_binding_not_active --share

select
  coalesce(uid, concat(path, ':', start_line)) as resource,
  case
    when (subject ->> 'kind') = 'ServiceAccount' and (subject ->> 'name') = 'default' then 'alarm'
    else 'ok'
  end as status,
  case
    when (subject ->> 'kind' = 'ServiceAccount') and (subject ->> 'name' = 'default') then name || ' default service accounts active.'
    else name || ' default service accounts not active.'
  end as reason,
  name as cluster_role_binding_name
  
  , coalesce(context_name, '') as context_name, source_type, coalesce(path || ':' || start_line || '-' || end_line, '') as path
from
  kubernetes_cluster_role_binding,
  jsonb_array_elements(subjects) as subject;