Detections
Analytics
CNTR-K8-000890 - The Kubernetes kubelet configuration files must have file permissions set to 644 or more restrictive.
Information
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.Solution
On the Master node, change to the /etc/kubernetes/manifest directory. 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
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Kubernetes_V1R5_STIG.zip
Item Details
Audit Name: DISA STIG Kubernetes v1r5
References: CAT|II, CCI|CCI-001499, Rule-ID|SV-242407r799982_rule, STIG-ID|CNTR-K8-000890, Vuln-ID|V-242407
Plugin: Unix
Control ID: 94e19db994d3f54ed667b9f2e14a37833f50edf6177fb48f771687449a98d619