$ oc get clusterversion
NAME      VERSION   AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.11.20   True        False         43h     Cluster version is 4.11.20

$ oc get clusterrolebinding system:openshift:controller:template-service-broker -o yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  creationTimestamp: "2023-01-11T13:19:24Z"
  name: system:openshift:controller:template-service-broker
  resourceVersion: "11423"
  uid: bee18421-143b-4677-afab-8ce54258399f
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:openshift:controller:template-service-broker
subjects:
- kind: ServiceAccount
  name: template-service-broker
  namespace: openshift-infra

$ oc get sa -A | grep template-service-broker

$ oc get sa template-service-broker -n openshift-infra
Error from server (NotFound): serviceaccounts "template-service-broker" not found

The serviceAccount template-service-broker does not exist. Neither in openshift-infra nor in any other namespace.

It's therefore not clear what this ClusterRoleBinding does, what use-case it does fulfill and why it references non existing serviceAccount.

From Security point of view, it's recommended to remove non serviceAccounts from ClusterRoleBindings as a potential attacker could abuse the current state by creating the necessary serviceAccount and gain undesired permissions.

OpenShift Container Platform 4 (all version from what we have found)

Always

1. Install OpenShift Container Platform 4
2. Run oc get clusterrolebinding system:openshift:controller:template-service-broker -o yaml

$ oc get clusterrolebinding system:openshift:controller:template-service-broker -o yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  creationTimestamp: "2023-01-11T13:19:24Z"
  name: system:openshift:controller:template-service-broker
  resourceVersion: "11423"
  uid: bee18421-143b-4677-afab-8ce54258399f
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:openshift:controller:template-service-broker
subjects:
- kind: ServiceAccount
  name: template-service-broker
  namespace: openshift-infra

$ oc get sa template-service-broker -n openshift-infra
Error from server (NotFound): serviceaccounts "template-service-broker" not found

The serviceAccount called template-service-broker to exist or otherwise the ClusterRoleBinding to be removed.

Finding related to a Security review done on the OpenShift Container Platform 4 - Platform