#VU100250 NULL pointer dereference in libvirt - CVE-2024-8235

Vulnerability identifier: #VU100250

Vulnerability 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

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor: libvirt.org

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

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

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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.