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

[miwithro]

(kubernetes/kubernetes#119595)

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

AKS Information:

Update your node image to 2022-containerd, 2019-containerd, or 2022-containerd-gen2 to remediate this vulnerability.

[microsoft-github-policy-service]

This issue has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs within 15 days of this comment.

[microsoft-github-policy-service]

This issue has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs within 15 days of this comment.

[microsoft-github-policy-service]

This issue has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs within 15 days of this comment.

[microsoft-github-policy-service]

Thanks for reaching out. I'm closing this issue as it was marked with "Fix released" and it hasn't had activity for 7 days.