Canonical publishes auto-apply vulnerability patch for Kubernetes

Charmed distribution of Kubernetes clusters auto-apply vulnerability patches for CVE-2018-1002105

On December 3 2018,  the Kubernetes project disclosed a security vulnerability in all versions of its popular container orchestration software. The vulnerability, CVE-2018-1002105, exists in the Kubernetes API server, and allows an attacker to send arbitrary requests to backend cluster services, such as kubelets. The flaw effectively allows any user to gain full administrator privileges on any compute node in the cluster. Worse still, it is nearly impossible to detect whether the security hole has been exploited.

Patches have been released to fix the security flaw in all supported versions of Kubernetes, and are available in versions 1.10.11, 1.11.5, and 1.12.3. Although some non-upgrade mitigations are possible, they are likely to be disruptive, and the Kubernetes team strongly recommends upgrading to one of the patched versions listed above.

For users of the Charmed Distribution of Kubernetes (CDK), updating to the patched versions requires no manual intervention. As of December 4 2018 in the morning, CDK clusters running any supported version (1.10.x, 1.11.x, 1.12.x) will begin to receive and apply the patches automatically, thanks to the auto-updating nature of snap packages. For CDK users running versions older than 1.10, Canonical recommends upgrading to a supported version as soon as possible.

kubernetes logo

What is Kubernetes?

Kubernetes, or K8s for short, is an open source platform pioneered by Google, which started as a simple container orchestration tool but has grown into a platform for deploying, monitoring and managing apps and services across clouds.

Learn more about Kubernetes ›

Newsletter signup

Select topics you're
interested in

In submitting this form, I confirm that I have read and agree to Canonical's Privacy Notice and Privacy Policy.

Related posts

Migrating to Ubuntu LTS: six facts for CentOS users

Considering migrating to Ubuntu from other Linux platforms, such as CentOS? Think Ubuntu- the most popular Linux distribution on public clouds, data centre...

How to switch the Docker container runtime to containerd with Charmed Kubernetes

This article describes how easy it is for users of Charmed Kubernetes to switch from the Docker container runtime to containerd. You may have heard that...

Install Amazon EKS Distro anywhere

One install, one cluster, snap! Today, we’re excited to announce that EKS is available outside of AWS, on any Ubuntu system, with the EKS snap. This...