Privilege escalation in libvirt



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
 libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor libvirt.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU46198

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-14339

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

Install update from vendor's website.

Vulnerable software versions

libvirt: 6.2.0 - 6.5.0

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=1860069
https://access.redhat.com/security/cve/CVE-2020-14339
https://libvirt.org/git/?p=libvirt.git;a=commit;h=22494556542c676d1b9e7f1c1f2ea13ac17e1e3e


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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