Symlink Attack Affecting k8s.io/kubernetes/pkg/kubelet Open this link in a new tab package, versions >=1.22.0 <1.22.2 >=1.21.0 <1.21.5 >=1.20.0 <1.20.11 <1.19.15


0.0
high
  • Attack Complexity

    Low

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-GOLANG-K8SIOKUBERNETESPKGKUBELET-1729741

  • published

    8 Oct 2021

  • disclosed

    8 Oct 2021

  • credit

    Fabricio Voznika and Mark Wolters of Google

How to fix?

Upgrade k8s.io/kubernetes/pkg/kubelet to version 1.22.2, 1.21.5, 1.20.11, 1.19.15 or higher.

Overview

k8s.io/kubernetes/pkg/kubelet is a package that contains the libraries that drive the Kubelet binary. The kubelet is responsible for node level pod management. It runs on each worker in the cluster.

Affected versions of this package are vulnerable to Symlink Attack. A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.