Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2025-64432— KubeVirt Affected by an Authentication Bypass in Kubernetes Aggregation Layer

CVSS 4.7 · Medium EPSS 0.02% · P5
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2025-64432

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
KubeVirt Affected by an Authentication Bypass in Kubernetes Aggregation Layer
Source: NVD (National Vulnerability Database)
Vulnerability Description
KubeVirt is a virtual machine management add-on for Kubernetes. Versions 1.5.3 and below, and 1.6.0 contained a flawed implementation of the Kubernetes aggregation layer's authentication flow which could enable bypass of RBAC controls. It was discovered that the virt-api component fails to correctly authenticate the client when receiving API requests over mTLS. In particular, it fails to validate the CN (Common Name) field in the received client TLS certificates against the set of allowed values defined in the extension-apiserver-authentication configmap. Failre to validate certain fields in the client TLS certificate may allow an attacker to bypass existing RBAC controls by directly communicating with the aggregated API server, impersonating the Kubernetes API server and its aggregator component. This issue is fixed in versions 1.5.3 and 1.6.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Kubevirt 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubevirt是KubeVirt开源的一款虚拟机管理器。 Kubevirt 1.5.3及之前版本和1.6.0版本存在信任管理问题漏洞，该漏洞源于virt-api组件未能正确验证客户端TLS证书中的CN字段，可能导致绕过RBAC控制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
kubevirtkubevirt < 1.5.3 -

II. Public POCs for CVE-2025-64432

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-64432

请登录查看更多情报信息。

Same Patch Batch · kubevirt · 2025-11-07 · 6 CVEs total

CVE-2025-644336.5 MEDIUMKubeVirt Arbitrary Container File Read
CVE-2025-644355.3 MEDIUMKubeVirt VMI Denial-of-Service (DoS) Using Pod Impersonation
CVE-2025-644375.0 MEDIUMKubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
CVE-2025-644344.7 MEDIUMKubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing
CVE-2025-64436KubeVirt Excessive Role Permissions Could Enable Unauthorized VMI Migrations Between Nodes

IV. Related Vulnerabilities

Same product: kubevirt
Same vendor: kubevirt
Same weakness: CWE-287

V. Comments for CVE-2025-64432

No comments yet

Leave a comment