Kubernetes PKI key file permissions are set to 600
Set up the kubernetes integration.
Description
Ensure that Kubernetes PKI key files have permissions of 600.
Rationale
Kubernetes makes use of a number of key files as part of the operation of its components. The permissions on these files should be set to 600 to protect their integrity and confidentiality.
Audit
Run the below command (based on the file location on your system) on the master node.
find /etc/kubernetes/pki -name "*.key" | xargs stat -c '%n %a'
Verify the permissions are 600.
Run the below command (based on the file location on your system) on the master node. For example, chmod -R 600 /etc/kubernetes/pki/*.key
Impact
None
Default value
By default, the keys used by Kubernetes are set to have permissions of 600
References
- https://kubernetes.io/docs/admin/kube-apiserver/
CIS controls
Version 6
5.1 Minimize And Sparingly Use Administrative Privileges - Minimize administrative privileges and only use administrative accounts when they are required. Implement focused auditing on the use of administrative privileged functions and monitor for anomalous behavior.
Version 7
5.2 Maintain Secure Images - Maintain secure images or templates for all systems in the enterprise based on the organization’s approved configuration standards. Any new system deployment or existing system that becomes compromised should be imaged using one of those images or templates.
