C-0172 - Ensure that the --anonymous-auth argument is set to false
Prerequisites
Run Kubescape with host sensor (see here)
Framework
cis-eks-t1.2.0, cis-v1.23-t1.0.1, cis-aks-t1.2.0
Severity
High
Description of the the issue
When enabled, requests that are not rejected by other configured authentication methods are treated as anonymous requests. These requests are then served by the Kubelet server. You should rely on authentication to authorize access and disallow anonymous requests.
Related resources
What does this control test
Disable anonymous requests to the Kubelet server.
How to check it manually
If using a Kubelet configuration file, check that there is an entry for authentication: anonymous: enabled
set to false
.
Run the following command on each node:
ps -ef | grep kubelet
Verify that the --anonymous-auth
argument is set to false
.
This executable argument may be omitted, provided there is a corresponding entry set to false
in the Kubelet config file.
Remediation
If using a Kubelet config file, edit the file to set authentication: anonymous: enabled
to false
.
If using executable arguments, edit the kubelet service file /etc/kubernetes/kubelet.conf
on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS
variable.
--anonymous-auth=false
Based on your system, restart the kubelet
service. For example:
systemctl daemon-reload
systemctl restart kubelet.service
Impact Statement
Anonymous requests will be rejected.
Default Value
By default, anonymous access is enabled.
Example
No example
Updated about 2 months ago