CVE-2023-3955: Insufficient input sanitization on Windows nodes leads to privilege escalation

[wzshiming]

What would you like to be added?

CVSS Rating: CVSS:3.1/av:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - HIGH (8.8)

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Am I vulnerable?

Any kubernetes environment with Windows nodes is impacted. Run kubectl get nodes -l kubernetes.io/os=windows to see if any Windows nodes are in use.

Affected Versions

• kubelet <= v1.28.0
• kubelet <= v1.27.4
• kubelet <= v1.26.7
• kubelet <= v1.25.12
• kubelet <= v1.24.16

kubernetes/kubernetes#119595

Why is this needed?

NONE

[github-actions]

Hi @wzshiming,
Thanks for opening an issue!
We will look into it as soon as possible.

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