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Roles and cluster roles should not grant 'create' permissions for pods Affecting Role service in Kubernetes

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

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    Frameworks
    CIS-Kubernetes
  • Snyk ID SNYK-CC-00653
  • credit Snyk Research Team
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Description

Roles and cluster roles should not grant 'create' permissions for pods. Minimize access to create pods for RBAC roles. Privilege escalation is possible when these permissions are available, since the created pods could be assigned privileged service accounts or have access to sensitive data. Avoid granting pod creation privileges by default.

How to fix?

When attribute resources is set to pods, the attribute verbs should not be set to create.

Example Configuration

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: example-role
rules:
- apiGroups: [""]
  resources: ["pods"]
  verbs: ["list", "get", "watch"]
- apiGroups: ["apps"]
  resources: ["deployments"]
  verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]

Terraform