Local denial of service in libvirt

1) NULL pointer dereference

EUVDB-ID: #VU100250

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-8235

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in interface/interface_backend_udev.c when virConnectListInterfaces() is called requesting 0 netowrks to be filled. A local user can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libvirt: 10.4.0 - 10.6.0

CPE2.3

• cpe:2.3:a:libvirt_org:libvirt:10.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:libvirt_org:libvirt:10.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:libvirt_org:libvirt:10.6.0:*:*:*:*:*:*:*

External links

https://bugzilla.redhat.com/show_bug.cgi?id=2308680
https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/X6WOVCL6QF3FQRFIIXL736RFZVSUWLWJ/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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