Symlink Attack Affecting k8s.io/kubernetes/pkg/features package, versions >=1.3.0 <1.7.14>=1.8.0 <1.8.9>=1.9.0 <1.9.4


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-GOLANG-K8SIOKUBERNETESPKGFEATURES-2826202
  • published17 May 2022
  • disclosed17 May 2022
  • creditJoel Smith of Red Hat

Introduced: 17 May 2022

CVE-2017-1002102  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade k8s.io/kubernetes/pkg/features to version 1.7.14, 1.8.9, 1.9.4 or higher.

Overview

k8s.io/kubernetes/pkg/features is a features package part of Kubernetes.

Affected versions of this package are vulnerable to Symlink Attack due to a symlink race. Every synchronization iteration, the Atomic Writer is looking for files that shouldn't be in a volume, and when it finds it is added to a list. When the search is done it deletes the files in the list. Because the deletion doesn't occur during the finding of the file, a malicious container can set up conditions to change the file selected for deletion with a symlink leading to a different file, which will be deleted.

CVSS Scores

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