Gentoo update for libvirt

Published: 2021-01-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2020-14339
CWE-ID	CWE-200
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	Gentoo Linux Operating systems & Components / Operating system
Vendor	Gentoo

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU46198

Risk: Medium

CVSSv3.1: 7.8 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14339

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to libvirt leaks a file descriptor for /dev/mapper/control. A remote user on guest operating system can obtain leaked descriptor address and escalate privileges on the system.

Mitigation

Update the affected packages.
app-emulation/libvirt to version: 6.7.0

Vulnerable software versions

Gentoo Linux: All versions

External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202101-22

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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