CVE-2025-64432— Kubevirt 信任管理问题漏洞

KubeVirt Affected by an Authentication Bypass in Kubernetes Aggregation Layer

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.

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

认证机制不恰当

Kubevirt 信任管理问题漏洞

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。

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