CVE-2023-3955: Kubernetes privilege escalation vulnerability

CVE-2023-3955 · Severity: low · CVSS 3.1 · Published 2024-08-21

Insufficient input sanitization on Windows nodes leads to privilege escalation in k8s.io/kubernetes and k8s.io/mount-utils

Technologies: k8s.io/kubernetes (Go). Vendors: Go.

Quick answers

Is CVE-2023-3955 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2023-3955 being exploited in the wild.
How severe is CVE-2023-3955?
Low severity, with a CVSS score of 3.1, published 21 August 2024.
Which products and versions are affected?
k8s.io/kubernetes (Go) SEMVER:introduced=0,fixed=1.24.17,introduced=1.25.0,fixed=1.25.13,introduced=1.26.0,fixed=1.26.8,introduced=1.27.0,fixed=1.27.5,introduced=1.28.0,fixed=1.28.1, SEMVER:introduced=1.28.0,fixed=1.28.1; k8s.io/mount-utils (Go) SEMVER:introduced=0,fixed=0.24.17,introduced=0.25.0,fixed=0.25.13,introduced=0.26.0,fixed=0.26.8,introduced=0.27.0,fixed=0.27.5,introduced=0.28.0,fixed=0.28.1.
Is there a fix for CVE-2023-3955?
Yes. k8s.io/kubernetes (Go): upgrade to 1.28.1 or later; k8s.io/mount-utils (Go): upgrade to 0.28.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2023-3955?
Check whether you run k8s.io/kubernetes (Go) or k8s.io/mount-utils (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • k8s.io/kubernetes (Go): upgrade to 1.28.1 or later
    go get k8s.io/kubernetes@v1.28.1
  • k8s.io/mount-utils (Go): upgrade to 0.28.1 or later
    go get k8s.io/mount-utils@v0.28.1

Affected products

  • k8s.io/kubernetes (Go) SEMVER:introduced=0,fixed=1.24.17,introduced=1.25.0,fixed=1.25.13,introduced=1.26.0,fixed=1.26.8,introduced=1.27.0,fixed=1.27.5,introduced=1.28.0,fixed=1.28.1, SEMVER:introduced=1.28.0,fixed=1.28.1
  • k8s.io/mount-utils (Go) SEMVER:introduced=0,fixed=0.24.17,introduced=0.25.0,fixed=0.25.13,introduced=0.26.0,fixed=0.26.8,introduced=0.27.0,fixed=0.27.5,introduced=0.28.0,fixed=0.28.1

Identifiers

  • CVE-2023-3955
  • GHSA-q78c-gwqw-jcmc
  • GO-2023-2170

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