| name | cis-gke-v190-4.1.2 |
| description | Minimize access to secrets (Manual) |
| category | cis-gke |
| version | 1.9.0 |
| author | cyberstrike-official |
| tags | ["cis","gke","kubernetes","gcp","rbac","service-accounts","cluster-roles","secrets","wildcards"] |
| cis_id | 4.1.2 |
| cis_benchmark | CIS Google Kubernetes Engine (GKE) Benchmark v1.9.0 |
| tech_stack | ["kubernetes","gcp","gke"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
4.1.2 Minimize access to secrets (Manual)
Profile Applicability
Description
The Kubernetes API stores secrets, which may be service account tokens for the Kubernetes API or credentials used by workloads in the cluster. Access to these secrets should be restricted to the smallest possible group of users to reduce the risk of privilege escalation.
Rationale
Inappropriate access to secrets stored within the Kubernetes cluster can allow for an attacker to gain additional access to the Kubernetes cluster or external resources whose credentials are stored as secrets.
Impact
Care should be taken not to remove access to secrets to system components which require this for their operation.
Audit
Review the users who have get, list or watch access to secrets objects in the Kubernetes API.
Remediation
Where possible, remove get, list and watch access to secret objects in the cluster.
Default Value
CLUSTERROLEBINDING SUBJECT
TYPE SA-NAMESPACE
cluster-admin system:masters
Group
system:controller:clusterrole-aggregation-controller clusterrole-aggregation-controller ServiceAccount kube-system
system:controller:expand-controller expand-controller ServiceAccount kube-system
system:controller:generic-garbage-collector generic-garbage-collector ServiceAccount kube-system
system:controller:namespace-controller namespace-controller ServiceAccount kube-system
system:controller:persistent-volume-binder persistent-volume-binder ServiceAccount kube-system
system:kube-controller-manager system:kube-controller-manager User
References
None specified.
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 4.1 Establish and Maintain a Secure Configuration Process | * | * | * |
| v7 | 5.2 Maintain Secure Images | | * | * |