CVE-2020-14363

High

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.

SeverityHigh

CVSS7.8

Exploit probability—

Product

X.org Libx11

PublishedSep 11, 2020

First seenSep 11, 2020

Weakness typeCWE-190Integer overflow CWE-416Use after free

How to fix

Update

x.org libx111.6.12 or later

Vendor advisories

usn.ubuntu.com/4487-2/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/

Affected products

Product	Affected versions	Fixed in
x.org libx11	v < 1.6.12	1.6.12
fedoraproject fedora	33	—

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