CVE-2020-14363

MEDIUM

Description

An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363

https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt

https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh

https://lists.fedoraproject.org/archives/list/[email protected]/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/

https://lists.x.org/archives/xorg-announce/2020-August/003056.html

https://usn.ubuntu.com/4487-2/

Details

Source: MITRE

Published: 2020-09-11

Updated: 2020-09-30

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH