Bug 2413483 (CVE-2025-64434)

Summary: CVE-2025-64434 kubevirt: KubeVirt: API Identity Spoofing Vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: fdeutsch, oramraz, smullick, stirabos, thason
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in KubeVirt's virt-handler component. Improper TLS certificate verification in the peer authentication logic allows an attacker who has compromised one virt-handler instance to impersonate the virt-api component and execute privileged operations against other virt-handler instances, compromising the integrity and availability of virtual machines managed across the cluster.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-11-07 23:01:35 UTC 
KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, due to the peer verification logic in virt-handler (via verifyPeerCert), an attacker who compromises a virt-handler instance, could exploit these shared credentials to impersonate virt-api and execute privileged operations against other virt-handler instances potentially compromising the integrity and availability of the VM managed by it. This vulnerability is fixed in 1.5.3 and 1.6.1.