CVE-2020-14363

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

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

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/

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

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

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3