cis-k8s-v1110-1.2.7

DevOps & Security

Ensure that the --authorization-mode argument includes Node (Automated)

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1.2.7 Ensure that the --authorization-mode argument includes Node (Automated)

Profile Applicability

Level 1 - Master Node

Description

Restrict kubelet nodes to reading only objects associated with them.

Rationale

The Node authorization mode only allows kubelets to read Secret, ConfigMap, PersistentVolume, and PersistentVolumeClaim objects associated with their nodes.

Impact

None

Audit

Run the following command on the Control Plane node:

ps -ef | grep kube-apiserver

Verify that the --authorization-mode argument exists and is set to a value to include Node.

Remediation

Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the Control Plane node and set the --authorization-mode parameter to a value that includes Node.

--authorization-mode=Node,RBAC

Default Value

By default, Node authorization is not enabled.

References

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	3.3 Configure Data Access Control Lists	*	*	*
v7	9.2 Ensure Only Approved Ports, Protocols and Services Are Running		*	*