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

Kako se proverava

Metod provere: Ručni pregled

Ova preporuka se ne može proveriti automatski. Skeniranje je navodi sa ovim uputstvima kada prosledite --include-manual.

This audit reviews Kubernetes ClusterRoleBinding objects in the Oracle OKE cluster to identify principals that are directly granted the cluster-admin ClusterRole. It lists each matching binding and its associated users, groups, or service accounts so the reviewer can verify whether full cluster administrative access is justified. Because OKE uses OCI IAM for access to OKE and the cluster control plane, and Kubernetes RBAC for cluster authorization, this check should be used as a partial review of administrative privilege rather than the sole test of cluster-admin exposure.

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Review each ClusterRoleBinding identified by the audit that grants the Kubernetes cluster-admin ClusterRole, and determine whether the listed user, group, or service account still requires full cluster administrative access. In Oracle OKE, this review should also account for access granted through OCI IAM policies and Kubernetes RBAC mappings, because Oracle documents that IAM and the Kubernetes RBAC Authorizer work together to authorize Kubernetes operations. Where responsibilities are limited to a namespace, workload, or operational function, replace cluster administration with a narrower authorization model. • Review each principal returned by the audit and confirm whether full cluster administrative access is still justified for that identity.