Denial of service in libvirt



Published: 2020-05-05
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-12430
CWE-ID CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor libvirt.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Memory leak

EUVDB-ID: #VU27541

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12430

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the domstats command, resulting in a potential denial of service due to an error in the qemuDomainGetStatsIOThread() in qemu/qemu_driver.c in libvirt. A remote attacker can perform a denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libvirt: 4.10.0 - 6.0.0

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1804548
http://bugzilla.redhat.com/show_bug.cgi?id=1828190
http://libvirt.org/git/?p=libvirt.git;a=commit;h=9bf9e0ae6af38c806f4672ca7b12a6b38d5a9581


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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