{"id":"AZL-34902","summary":"CVE-2023-26484 affecting package kubevirt for versions less than 1.2.0-1","details":"KubeVirt is a virtual machine management add-on for Kubernetes. In versions 0.59.0 and prior, if a malicious user has taken over a Kubernetes node where virt-handler (the KubeVirt node-daemon) is running, the virt-handler service account can be used to modify all node specs. This can be misused to lure-in system-level-privileged components which can, for instance, read all secrets on the cluster, or can exec into pods on other nodes. This way, a compromised node can be used to elevate privileges beyond the node until potentially having full privileged access to the whole cluster. The simplest way to exploit this, once a user could compromise a specific node, is to set with the virt-handler service account all other nodes to unschedulable and simply wait until system-critical components with high privileges appear on its node. No patches are available as of time of publication. As a workaround, gatekeeper users can add a webhook which will block the `virt-handler` service account to modify the spec of a node.","modified":"2026-04-21T04:27:34.270150Z","published":"2023-03-15T21:15:08Z","upstream":["CVE-2023-26484"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26484"}],"affected":[{"package":{"name":"kubevirt","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kubevirt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-34902.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N"}]}