Kubelet should only allow explicitly authorized requests

kubernetes

Set up the kubernetes integration.

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Description

Explicit authorization should be enabled. Kubelets, by default, allow all authenticated requests (even anonymous ones) without needing explicit authorization checks from the API server.

Remediation

  1. If using a Kubelet config file, edit the file to set authorization: Webhook.
  2. If using executable arguments, edit the kubelet service file /etc/systemd/system/kubelet.service.d/10-kubeadm.conf on each worker node and set the below parameter in the KUBELET_AUTHZ_ARGS variable.
--authorization-mode=Webhook
  1. Restart the kubelet service.