MKE must enable kernel protection.
An XCCDF Rule
Description
System kernel is responsible for memory, disk, and task management. The kernel provides a gateway between the system hardware and software. Kubernetes requires kernel access to allocate resources to the Control Plane. Threat actors that penetrate the system kernel can inject malicious code or hijack the Kubernetes architecture. It is vital to implement protections through Kubernetes components to reduce the attack surface.
- ID
- SV-260933r966156_rule
- Version
- CNTR-MK-000990
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
When using Kubernetes orchestration, edit the Kubernetes Kubelet file in the /etc/sysconfig directory on the Kubernetes Control Plane. Set the argument "--protect-kernel-defaults" to "true".
Reset Kubelet service using the following command:
service kubelet restart