cyberstrikeus CIS Red Hat OpenShift Container Platform Benchmark v1.7.0 - Control 4.1.2
Profile Applicability
- Level: 1
Description
Ensure that the kubelet service file ownership is set to root:root.
Rationale
The kubelet service file controls various parameters that set the behavior of the kubelet service in the worker node. You should set its file ownership to maintain the integrity of the file. The file should be owned by root:root.
Impact
None
Audit Procedure
Run the following command to list the user and group for the kubelet.service file on each node:
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
do
oc debug node/${node} -- chroot /host stat -c %U:%G /etc/systemd/system/kubelet.service
done
Verify that the ownership is set to root:root.
Remediation
None.
Default Value
By default, OpenShift sets the default user and group for the kubelet.service file to root:root.
References
- https://docs.openshift.com/container-platform/4.5/architecture/control-plane.html#understanding-machine-config-operator_control-plane
- https://docs.openshift.com/container-platform/4.5/scalability_and_performance/recommended-host-practices.html#create-a-kubeletconfig-crd-to-edit-kubelet-parameters_
- https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/
- https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/#44-joining-your-nodes
- https://kubernetes.io/docs/reference/setup-tools/kubeadm/#kubelet-drop-in
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 5.4 Restrict Administrator Privileges to Dedicated Administrator Accounts | * | * | * |
| v7 | 4.3 Ensure the Use of Dedicated Administrative Accounts | * | * | * |
MITRE ATT&CK Mappings
| Techniques / Sub-techniques | Tactics | Mitigations |
|---|---|---|
| T1083, T1222 | TA0005, TA0007 | M1026 |
Profile
Level 1 (Automated)