CVE-2023-3893 — Vulnerability in...

HIGH

Kubernetes csi-proxy vulnerable to privilege escalation due to improper input validation

Published November 3, 2023Updated July 9, 2025Source: osv

Summary

Kubernetes is vulnerable to privilege escalation when 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.

Advisory Timeline

First published November 3, 2023 (1074 days ago).
Last revised July 9, 2025 — 614 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Update github.com/kubernetes-csi/csi-proxy to 0.0.0-20230821192013-2523e6674ded or later

go get github.com/kubernetes-csi/csi-proxy@v0.0.0-20230821192013-2523e6674ded

Update github.com/kubernetes-csi/csi-proxy to 1.1.3 or later

go get github.com/kubernetes-csi/csi-proxy@v1.1.3

Update github.com/kubernetes-csi/csi-proxy/v2 to 2.0.0-alpha.1 or later

go get github.com/kubernetes-csi/csi-proxy/v2@v2.0.0-alpha.1

Update github.com/kubernetes-csi/csi-proxy to 1.1.3-0.20230821192013-2523e6674ded or later

go get github.com/kubernetes-csi/csi-proxy@v1.1.3-0.20230821192013-2523e6674ded

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

Affects 1 ecosystem: go (2).

Package	Ecosystem	Affected	Fixed In
github.com/kubernetes-csi/csi-proxy	go	All versions	0.0.0-20230821192013-2523e6674ded
github.com/kubernetes-csi/csi-proxy	go	All versions	1.1.3
github.com/kubernetes-csi/csi-proxy/v2	go	2.0.0-alpha.0	2.0.0-alpha.1
github.com/kubernetes-csi/csi-proxy	go	All versions	1.1.3-0.20230821192013-2523e6674ded

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-20
Improper Input ValidationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.8 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2023-3893?: Kubernetes csi-proxy vulnerable to privilege escalation due to improper input validation This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.8/10).
How do I check if my project is affected by CVE-2023-3893?: CVE-2023-3893 affects github.com/kubernetes-csi/csi-proxy and github.com/kubernetes-csi/csi-proxy/v2. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-3893 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

8.8

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-r6cc-7wj7-gfx2

GO-2023-2176

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