| CVE | CVE-2023-26484 |
| CVE Title | |
| Published Date | 2023-03-15T21:15Z |
| Modified Date | 2023-03-23T17:10Z |
| CWE Type | CWE-863 |
| CVSS 3.x | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
| 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. |
| References | |
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| Reference URL | https://github.com/kubevirt/kubevirt/issues/9109 |
| Reference Description | MISC https://github.com/kubevirt/kubevirt/issues/9109 |
| Reference URL | https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2 |
| Reference Description | MISC https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2 |
| Tags | Issue Tracking Third Party Advisory |
| Sources | NIST MITRE |
