Ensure that the cluster-admin role is only used where required

严重级别 1人工审核kubernetes

说明

The RBAC role cluster-admin provides wide-ranging powers over the environment and should be used only where and when needed. The benchmark marks this recommendation Manual.

检查方式

审计方法: 人工审核

此项建议无法自动检查。当您传入 --include-manual 时，扫描结果会列出该项并附带这些说明。

Obtain a list of the principals who have access to the cluster-admin role by reviewing the clusterrolebinding output for each role binding that has access to the cluster-admin role. kubectl get clusterrolebindings -o=custom-columns=NAME:.metadata.name,ROLE:.roleRef.name,SUBJECT:.subjects[*].name Review each principal listed and ensure that cluster-admin privilege is required for it.

修复方式

修复方法: 操作指南或基础设施补丁

Identify all clusterrolebindings to the cluster-admin role. Check if they are used and if they need this role or if they could use a role with fewer privileges. Where possible, first bind users to a lower privileged role and then remove the clusterrolebinding to the cluster-admin role : kubectl delete clusterrolebinding [name]

属性

操作系统: 任意
标签: kubernetespoliciesrbac
参考: CIS Kubernetes Benchmark v2.1.0 - 5.1.1 Ensure that the cluster-admin role is only used where required