CVE-2023-3893

Kubernetes - csi-proxy - Insufficient input sanitization leads to privilege escalation

Description

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 1.29% Top 25%
Vendor Advisory github.com
Affected: Kubernetes csi-proxy
Published at:
Updated at:

References

Link Tags
https://github.com/kubernetes/kubernetes/issues/119594 vendor advisory issue tracking
https://groups.google.com/g/kubernetes-security-announce/c/lWksE2BoCyQ mailing list
https://security.netapp.com/advisory/ntap-20231221-0004/

Frequently Asked Questions

What is the severity of CVE-2023-3893?
CVE-2023-3893 has been scored as a high severity vulnerability.
How to fix CVE-2023-3893?
To fix CVE-2023-3893, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-3893 being actively exploited in the wild?
It is possible that CVE-2023-3893 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3893?
CVE-2023-3893 affects Kubernetes csi-proxy.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.