Ubuntu update for libvirt

1) Race condition

EUVDB-ID: #VU78694

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3750

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition within the virStoragePoolObjListSearch() function. which does not return a locked pool as expected. A remote attacker with ability to connect to the read-only socket can crash the libvirt daemon.

Mitigation

Update the affected package libvirt to the latest version.

Vulnerable software versions

Ubuntu: 23.04

libvirt0 (Ubuntu package): before 9.0.0-2ubuntu1.2

libvirt-daemon-system (Ubuntu package): before 9.0.0-2ubuntu1.2

libvirt-daemon (Ubuntu package): before 9.0.0-2ubuntu1.2

CPE2.3

• cpe:2.3:o:canonical:ubuntu:23.04:*:*:*:*:*:*:*
• cpe:2.3:a:canonical:libvirt0_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:libvirt-daemon-system_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:libvirt-daemon_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-6253-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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