发布于3月6日3月6日 Members SUSE: CVE-2023-26484: SUSE Linux Security Advisory Severity 8 CVSS (AV:N/AC:M/Au:S/C:C/I:C/A:N) Published 03/15/2023 Created 05/05/2023 Added 04/25/2023 Modified 01/28/2025 Description 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. Solution(s) suse-upgrade-kubevirt-container-disk suse-upgrade-kubevirt-manifests suse-upgrade-kubevirt-tests suse-upgrade-kubevirt-virt-api suse-upgrade-kubevirt-virt-controller suse-upgrade-kubevirt-virt-handler suse-upgrade-kubevirt-virt-launcher suse-upgrade-kubevirt-virt-operator suse-upgrade-kubevirt-virtctl suse-upgrade-obs-service-kubevirt_containers_meta References https://attackerkb.com/topics/cve-2023-26484 CVE - 2023-26484
