cyberstrikeus CIS Red Hat OpenShift Container Platform Benchmark v1.7.0 - Control 4.1.5
Profile Applicability
- Level: 1
Description
Ensure that the kubelet.conf file has permissions of 644 or more restrictive.
Rationale
The kubelet.conf file is the kubeconfig file for the node, and controls various parameters that set the behavior and identity of the worker node. You should restrict its file permissions to maintain the integrity of the file. The file should be writable by only the administrators on the system.
Impact
None
Audit Procedure
Run the following command to check the permissions of the kubelet.conf on each node:
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
do
oc debug node/${node} -- chroot /host stat -c %a /etc/kubernetes/kubelet.conf
done
Verify that the permissions are 644.
Remediation
None.
Default Value
By default, OpenShift sets the default permissions for the kubelet.conf to 644.
References
- https://docs.openshift.com/container-platform/latest/architecture/control-plane.html#understanding-machine-config-operator_control-plane
- https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 3.3 Configure Data Access Control Lists | * | * | * |
| v7 | 14.6 Protect Information through Access Control Lists | * | * | * |
MITRE ATT&CK Mappings
| Techniques / Sub-techniques | Tactics | Mitigations |
|---|---|---|
| T1083, T1222 | TA0005, TA0007 | M1022 |
Profile
Level 1 (Automated)