Symlink Attack

Affecting github.com/kubernetes/kubernetes/pkg/kubelet package, versions >=1.22.0 <1.22.2 || >=1.21.0 <1.21.5 || >=1.20.0 <1.20.11 || <1.19.15

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Overview

github.com/kubernetes/kubernetes/pkg/kubelet is a kubelet package.

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.

Remediation

Upgrade github.com/kubernetes/kubernetes/pkg/kubelet to version 1.22.2, 1.21.5, 1.20.11, 1.19.15 or higher.

References

CVSS Score

8.8
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Credit
Fabricio Voznika and Mark Wolters of Google
CVE
CVE-2021-25741
CWE
CWE-59
Snyk ID
SNYK-GOLANG-GITHUBCOMKUBERNETESKUBERNETESPKGKUBELET-1729740
Disclosed
08 Oct, 2021
Published
08 Oct, 2021