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RoleBinding is set to the default service account Affecting Deployment service in Kubernetes

Severity

0.0
low
0
10
    Severity Framework
    Snyk CCSS
    Rule category
    Containers / Best Practices

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  • Snyk ID SNYK-CC-00644
  • credit Snyk Research Team
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Description

A binding was found between a role and the default service account. The use of the default service account is discouraged.

How to fix?

Set subjects.name to a service account other than default.

Example Configuration

apiVersion: v1
kind: Namespace
metadata:
  name: user-1-namespace
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: role-binding-valid
  namespace: user-1-namespace
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: role-grantor
subjects:
  - kind: User
    name: default
    namespace: default
  - kind: User
    name: default
    namespace: kube-system