CNTR-K8-000890 - The Kubernetes KubeletConfiguration files must have file permissions set to 644 or more restrictive.


The kubelet configuration file contains the runtime configuration of the kubelet service. If an attacker can gain access to this file, changes can be made to open vulnerabilities and bypass user authorizations inherit within Kubernetes with RBAC implemented.


On the Kubernetes Control Plane and Worker nodes, run the command:
ps -ef | grep kubelet

Check the config file (path identified by: --config):

Change to the directory identified by --config (example /etc/sysconfig/) and run the command:
chmod 644 kubelet

To verify the change took place, run the command:
ls -l kubelet

The kubelet file should now have the permissions of '644'.

See Also

Item Details


References: 800-53|CM-5(6), CAT|II, CCI|CCI-001499, Rule-ID|SV-242407r918171_rule, STIG-ID|CNTR-K8-000890, Vuln-ID|V-242407

Plugin: Unix

Control ID: 9259707ecadf9726160e6528165bdbec4cdaee7ff326de68951e37e8a88fae99