CVE-2020-14363

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
redhatCNA
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 38%
VendorProductVersion
x.orglibx11
𝑥
< 1.6.12
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libx11
bullseye (security)
2:1.7.2-1+deb11u2
fixed
bullseye
2:1.7.2-1+deb11u2
fixed
bookworm
2:1.8.4-2+deb12u2
fixed
bookworm (security)
2:1.8.4-2+deb12u2
fixed
trixie
2:1.8.7-1
fixed
sid
2:1.8.10-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libx11
focal
Fixed 2:1.6.9-2ubuntu1.1
released
bionic
Fixed 2:1.6.4-3ubuntu0.3
released
xenial
Fixed 2:1.6.3-1ubuntu2.2
released
trusty
Fixed 2:1.6.2-1ubuntu2.1+esm1
released
Common Weakness Enumeration
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/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
https://lists.x.org/archives/xorg-announce/2020-August/003056.html
https://usn.ubuntu.com/4487-2/
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/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
https://lists.x.org/archives/xorg-announce/2020-August/003056.html
https://usn.ubuntu.com/4487-2/