Incorrect authorization in KubeVirt

1) Incorrect authorization

EUVDB-ID: #VU75445

Risk: Medium

CVSSv3.1: 7.4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2023-26484

CWE-ID: CWE-863 - Incorrect Authorization

Exploit availability: No

Description

The vulnerability allows a remote user to compromise the cluster.

The vulnerability exists due to incorrect authorization, which allows the virt-handler service account to modify all node specs. A remote user can elevate privileges beyond the node and gain access to the whole cluster.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Kubevirt: 0.11.0 - 0.59.0

CPE2.3

• cpe:2.3::kubevirt:kubevirt:0.59.0:*:*:*:*:*:*:*
• cpe:2.3::kubevirt:kubevirt:0.58.1:*:*:*:*:*:*:*
• cpe:2.3::kubevirt:kubevirt:0.58.0:*:*:*:*:*:*:*

External links

http://github.com/kubevirt/kubevirt/issues/9109
http://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.