PT-2020-3582 · Xorg+8 · Xorg-Server+8

Jan-Niklas Sohn · CVE-2020-14347 · Published 2020-07-31 · Updated 2025-04-07

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Xorg-server versions prior to 1.20.9

Description A flaw was found in the way xserver memory was not properly initialized, which could leak parts of server memory to the X client. In cases where the Xorg server runs with elevated privileges, this could result in a possible ASLR bypass.

Recommendations For versions prior to 1.20.9, update to version 1.20.9 or later to resolve the issue. As a temporary workaround, consider running the Xorg server with reduced privileges to minimize the risk of exploitation.

Exploit

Fix

Information Disclosure

Improper Initialization

Weakness Enumeration

CWE-200

CWE-665

Related Identifiers

ALSA-2021:1804

ALT-PU-2020-2670

ALT-PU-2025-4785

BDU:2020-03915

CESA-2020_5408

CESA-2021_1804

CVE-2020-14347

DLA-2359-1

DSA-4758-1

MGASA-2020-0335

OESA-2021-1078

OPENSUSE-SU-2020:1279-1

OPENSUSE-SU-2020:1302-1

OPENSUSE-SU-2020_1279-1

OPENSUSE-SU-2020_1302-1

OPENSUSE-SU-2024:11525-1

RHSA-2020:5408

RHSA-2020_5408

RHSA-2021:1804

RHSA-2021_1804

RLSA-2021:1804

SUSE-SU-2020:14463-1

SUSE-SU-2020:2240-1

SUSE-SU-2020:2241-1

SUSE-SU-2020:2242-1

SUSE-SU-2020:2325-1

SUSE-SU-2020:2326-1

SUSE-SU-2020:2331-1

USN-4488-1

USN-4488-2

ZDI-20-934

Affected Products

Alt Linux

Almalinux

Centos

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

Xorg-Server

References · 134

• 🔥 https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2020:2331-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00066.html · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2021:1804 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-14347 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-14347 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-14347 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14345 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2021:1804 · Vendor Advisory
• https://lists.x.org/archives/xorg-announce/2020-July/003051.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:2240-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4488-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-14347 · Security Note
• https://ubuntu.com/security/CVE-2020-14362 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:2241-1 · Vendor Advisory