CVE-2023-3893 — A security issue was discovered in Kubernetes where a user that can create pods

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

01What is this vulnerability?

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

02Affected products

Vendor	Product	Versions
Kubernetes	csi	proxy — v2.0.0-alpha.0, 0, v2.0.0-alpha.1, v1.1.3

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-11-03T17:34:10.188Z
• Last modified: 2025-02-13T17:02:36.473Z

09References

• github.com — https://github.com/kubernetes/kubernetes/issues/119594
• groups.google.com — https://groups.google.com/g/kubernetes-security-announce/c/lWksE2BoCyQ
• security.netapp.com — https://security.netapp.com/advisory/ntap-20231221-0004/