Role binding to default service account

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Metadata

Id: 1e749bc9-fde8-471c-af0c-8254efd2dee5

Cloud Provider: k8s

Framework: Kubernetes

Severity: Medium

Category: Insecure Defaults

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Description

No Role or ClusterRole should bind to a default service account.

Compliant Code Examples

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: read-pods
  namespace: default
subjects:
- kind: User
  name: jane
  apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: Role
  name: pod-reader
  apiGroup: rbac.authorization.k8s.io

Non-Compliant Code Examples

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: read-pods
  namespace: default
subjects:
- kind: User
  name: jane
  apiGroup: rbac.authorization.k8s.io
- kind: ServiceAccount
  name: default
  namespace: kube-system
roleRef:
  kind: Role
  name: pod-reader
  apiGroup: rbac.authorization.k8s.io