CVE-2023-26484
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-26484
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-26484.json
- Aliases
- Published
- 2023-03-15T21:15:08Z
- Modified
- 2023-11-29T09:55:29.681038Z
- 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-handlerservice account to modify the spec of a node. - References
Affected packages
Git / github.com/kubevirt/kubevirt
Affected ranges
- Type
- GIT
- Repo
- https://github.com/kubevirt/kubevirt
- Events
-
Introduced0The exact introduced commit is unknownLast affected