CVE-2020-14362 json
A flaw was found in X.Org Server before xorg-x11-server 1.20.9.
published 2020-09-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6505
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Patch / fix
- x.org x_server 1.20.9
- xorg-server Debian 14, Debian 13, Debian 12 2:1.20.9-1
debian advisories DEBIAN-CVE-2020-14362
- xorg-server Ubuntu 16.04 LTS 2:1.18.4-0ubuntu0.9
- xorg-server Ubuntu 18.04 LTS 2:1.19.6-1ubuntu4.5
- xorg-server Ubuntu 20.04 LTS 2:1.20.8-2ubuntu2.3
- xorg-server-hwe-16.04 Ubuntu 16.04 LTS 2:1.19.6-1ubuntu4.1~16.04.3
- xorg-server-hwe-18.04 Ubuntu 18.04 LTS 2:1.20.8-2ubuntu2.2~18.04.2
- xorg-server Ubuntu Pro 14.04 LTS 2:1.15.1-0ubuntu2.11+esm2
ubuntu advisories UBUNTU-CVE-2020-14362
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- mesa RHEL 8 20.3.3-2.el8
- libdrm RHEL 8 2.4.103-1.el8
- libX11 RHEL 8 1.6.8-4.el8
- libglvnd RHEL 8 1:1.3.2-1.el8
- libinput RHEL 8 1.16.3-1.el8
- libwacom RHEL 8 1.6-2.el8
- libX11-xcb RHEL 8 1.6.8-4.el8
- mesa-libGL RHEL 8 20.3.3-2.el8
red hat advisories RHSA-2021:1804RHSA-2020:4953RHSA-2020:4910
- xorg-x11-server SLE Workstation Extension 15 SP1, SLE Module for Development Tools 15 SP1, SLE Module for Basesystem 15 SP1 1.20.3-14.5.5.2
- xorg-x11-server SLE Workstation Extension 15 SP2, SLE Module for Development Tools 15 SP2, SLE Module for Basesystem 15 SP2 1.20.3-22.5.5.1
- xorg-x11-server SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 1.19.6-10.12.1
- xorg-x11-server SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES 12 SP3-LTSS +8 more 7.6_1.18.3-76.29.1
- xorg-x11-server SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 1.19.6-4.11.1
- xorg-x11-server SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 1.19.6-8.19.1
- xorg-x11-server SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 7.4-27.122.29.1
suse advisories SUSE-SU-2020:2481-1SUSE-SU-2020:2452-1SUSE-SU-2020:2407-1SUSE-SU-2020:2401-1SUSE-SU-2020:2399-1SUSE-SU-2020:2398-1
- xorg-x11-server openSUSE Tumbleweed 1.20.13-1.2
- xorg-x11-server openSUSE Leap 15.2 1.20.3-lp152.8.6.1
- xorg-x11-server openSUSE Leap 15.1 1.20.3-lp151.4.6.1
opensuse advisories openSUSE-SU-2024:11525-1openSUSE-SU-2020:1376-1openSUSE-SU-2020:1374-1
- libglvnd AlmaLinux 8 1:1.3.2-1.el8
- libglvnd-egl AlmaLinux 8 1:1.3.2-1.el8
- libglvnd-glx AlmaLinux 8 1:1.3.2-1.el8
- libglvnd-gles AlmaLinux 8 1:1.3.2-1.el8
- libglvnd-opengl AlmaLinux 8 1:1.3.2-1.el8
- xorg-x11-drivers AlmaLinux 8 7.7-30.el8
- xorg-x11-server-source AlmaLinux 8 1.20.10-1.el8
almalinux advisories ALSA-2021:1804
- mesa Rocky Linux 8 20.3.3-2.el8
- libdrm Rocky Linux 8 2.4.103-1.el8
- libX11 Rocky Linux 8 1.6.8-4.el8
- libglvnd Rocky Linux 8 1:1.3.2-1.el8
- libinput Rocky Linux 8 1.16.3-1.el8
- libwacom Rocky Linux 8 1.6-2.el8
- egl-wayland Rocky Linux 8 1.1.5-3.el8
- xorg-x11-server Rocky Linux 8 1.20.10-1.el8
rocky linux advisories RLSA-2021:1804
- xorg-server Alpine 3.10 1.20.5-r2
- xorg-server Alpine 3.11 1.20.6-r2
- xorg-server Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 1.20.9-r0
- xorg-server Alpine 3.9 1.20.3-r2
alpine advisories ALPINE-CVE-2020-14362
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2020-14362 updated cvss 7.8
xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability
-
Red Hat Enterprise Linux 5 xorg-x11-serveraffected: no fix planned “Out of support scope”
-
Red Hat CodeReady Linux Builder (v. 8) xorg-x11-server-source 1.20.10-1.el8 Red Hat Enterprise Linux AppStream (v. 8) mesa 20.3.3-2.el8, libwacom 1.6-2.el8, libX11 1.6.8-4.el8, libdrm 2.4.103-1.el8, libglvnd 1.3.2-1.el8, libinput 1.16.3-1.el8, +28 morefixed: vendor fix RHSA-2021:1804
-
Red Hat Enterprise Linux Client (v. 7) xorg-x11-server 1.20.4-12.el7_9, xorg-x11-server-Xorg 1.20.4-12.el7_9, xorg-x11-server-common 1.20.4-12.el7_9, xorg-x11-server-Xephyr 1.20.4-12.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) xorg-x11-server-Xdmx 1.20.4-12.el7_9, xorg-x11-server-Xvfb 1.20.4-12.el7_9, xorg-x11-server-Xnest 1.20.4-12.el7_9, xorg-x11-server-source 1.20.4-12.el7_9, xorg-x11-server-Xwayland 1.20.4-12.el7_9 Red Hat Enterprise Linux ComputeNode Optional (v. 7) xorg-x11-server 1.20.4-12.el7_9, xorg-x11-server-Xdmx 1.20.4-12.el7_9, xorg-x11-server-Xorg 1.20.4-12.el7_9, xorg-x11-server-Xvfb 1.20.4-12.el7_9, xorg-x11-server-Xnest 1.20.4-12.el7_9, xorg-x11-server-common 1.20.4-12.el7_9, +3 morefixed: vendor fix RHSA-2020:4910
-
Red Hat Enterprise Linux Desktop (v. 6) xorg-x11-server 1.17.4-18.el6_10, xorg-x11-server-Xorg 1.17.4-18.el6_10, xorg-x11-server-common 1.17.4-18.el6_10, xorg-x11-server-Xephyr 1.17.4-18.el6_10 Red Hat Enterprise Linux Desktop Optional (v. 6) xorg-x11-server-Xdmx 1.17.4-18.el6_10, xorg-x11-server-Xvfb 1.17.4-18.el6_10, xorg-x11-server-Xnest 1.17.4-18.el6_10, xorg-x11-server-source 1.17.4-18.el6_10 Red Hat Enterprise Linux HPC Node Optional (v. 6) xorg-x11-server 1.17.4-18.el6_10, xorg-x11-server-Xdmx 1.17.4-18.el6_10, xorg-x11-server-Xorg 1.17.4-18.el6_10, xorg-x11-server-Xvfb 1.17.4-18.el6_10, xorg-x11-server-Xnest 1.17.4-18.el6_10, xorg-x11-server-common 1.17.4-18.el6_10, +2 more Red Hat Enterprise Linux Server (v. 6) xorg-x11-server 1.17.4-18.el6_10, xorg-x11-server-Xorg 1.17.4-18.el6_10, xorg-x11-server-common 1.17.4-18.el6_10, xorg-x11-server-Xephyr 1.17.4-18.el6_10fixed: vendor fix RHSA-2020:4953
-
Red Hat Enterprise Linux Server (v. 7) xorg-x11-server 1.20.4-12.el7_9, xorg-x11-server-Xorg 1.20.4-12.el7_9, xorg-x11-server-common 1.20.4-12.el7_9, xorg-x11-server-Xephyr 1.20.4-12.el7_9fixed: vendor fix RHSA-2020:4910
-
Red Hat Enterprise Linux Server Optional (v. 6) xorg-x11-server-Xdmx 1.17.4-18.el6_10, xorg-x11-server-Xvfb 1.17.4-18.el6_10, xorg-x11-server-Xnest 1.17.4-18.el6_10, xorg-x11-server-source 1.17.4-18.el6_10fixed: vendor fix RHSA-2020:4953
-
Red Hat Enterprise Linux Server Optional (v. 7) xorg-x11-server-Xdmx 1.20.4-12.el7_9, xorg-x11-server-Xvfb 1.20.4-12.el7_9, xorg-x11-server-Xnest 1.20.4-12.el7_9, xorg-x11-server-source 1.20.4-12.el7_9, xorg-x11-server-Xwayland 1.20.4-12.el7_9fixed: vendor fix RHSA-2020:4910
-
Red Hat Enterprise Linux Workstation (v. 6) xorg-x11-server 1.17.4-18.el6_10, xorg-x11-server-Xorg 1.17.4-18.el6_10, xorg-x11-server-common 1.17.4-18.el6_10, xorg-x11-server-Xephyr 1.17.4-18.el6_10fixed: vendor fix RHSA-2020:4953
show 4 moreshow fewer
-
Red Hat Enterprise Linux Workstation (v. 7) xorg-x11-server 1.20.4-12.el7_9, xorg-x11-server-Xorg 1.20.4-12.el7_9, xorg-x11-server-common 1.20.4-12.el7_9, xorg-x11-server-Xephyr 1.20.4-12.el7_9fixed: vendor fix RHSA-2020:4910
-
Red Hat Enterprise Linux Workstation Optional (v. 6) xorg-x11-server-Xdmx 1.17.4-18.el6_10, xorg-x11-server-Xvfb 1.17.4-18.el6_10, xorg-x11-server-Xnest 1.17.4-18.el6_10, xorg-x11-server-source 1.17.4-18.el6_10fixed: vendor fix RHSA-2020:4953
-
Red Hat Enterprise Linux Workstation Optional (v. 7) xorg-x11-server-Xdmx 1.20.4-12.el7_9, xorg-x11-server-Xvfb 1.20.4-12.el7_9, xorg-x11-server-Xnest 1.20.4-12.el7_9, xorg-x11-server-source 1.20.4-12.el7_9, xorg-x11-server-Xwayland 1.20.4-12.el7_9fixed: vendor fix RHSA-2020:4910
-
Red Hat Enterprise Linux 9 xorg-x11-server, xorg-x11-server-Xdmx, xorg-x11-server-Xorg, xorg-x11-server-Xvfb, xorg-x11-server-Xnest, xorg-x11-server-common, +2 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- n/a xorg-x11-server
Classification
- Weakness
-
- CWE-191 Integer Underflow (Wrap or Wraparound)
References
-
lists.x.org
/archives/xorg-announce/2020-August/003058.html
mailing-list, patch, vendor-advisory
-
usn.ubuntu.com
/4488-2/
vendor-advisory, third-party-advisory
-
security.gentoo.org
/glsa/202012-01
vendor-advisory, third-party-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1869144
issue-tracking, third-party-advisory
-
zerodayinitiative.com
/advisories/ZDI-20-1419/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2020-14362
- NVD CVE-2020-14362
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.