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01 Record

CVE-2020-14361

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

UnratedPUBLISHEDCNA: redhat
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.61% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 49.1% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-09-15 00:00Z6 YR AGO
Last updated
2024-08-04 12:46Z2 YR AGO
Reserved
2020-06-17
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-191Integer Underflow (Wrap or Wraparound)Base
Data version
5.1
Document digest
b07bd40a646016bf6d7c5be59996e880b95f9fed5b12bfa3a9c2f9d16c81eb86

05 Affected products

VendorProductVersionsPlatforms
n/axorg-x11-serverbefore xorg-x11-server 1.20.9—

06 References

07 Fixed in

AlmaLinux 8

  • libglvnd
    Fixed in 1:1.3.2-1.el8
  • libglvnd-core-devel
    Fixed in 1:1.3.2-1.el8
  • libglvnd-devel
    Fixed in 1:1.3.2-1.el8
  • libglvnd-egl
    Fixed in 1:1.3.2-1.el8
  • libglvnd-gles
    Fixed in 1:1.3.2-1.el8
  • libglvnd-glx
    Fixed in 1:1.3.2-1.el8
  • libglvnd-opengl
    Fixed in 1:1.3.2-1.el8
  • libinput-devel
    Fixed in 1.16.3-1.el8
  • libwacom-devel
    Fixed in 1.6-2.el8
  • mesa-libOSMesa-devel
    Fixed in 20.3.3-2.el8
  • mesa-libgbm-devel
    Fixed in 20.3.3-2.el8
  • xorg-x11-drivers
    Fixed in 7.7-30.el8
  • xorg-x11-server-devel
    Fixed in 1.20.10-1.el8
  • xorg-x11-server-source
    Fixed in 1.20.10-1.el8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • libglvnd
    Fixed in 1:1.3.2-1.el8
  • libglvnd-core-devel
    Fixed in 1:1.3.2-1.el8
  • libglvnd-devel
    Fixed in 1:1.3.2-1.el8
  • libglvnd-egl
    Fixed in 1:1.3.2-1.el8
  • libglvnd-gles
    Fixed in 1:1.3.2-1.el8
  • libglvnd-glx
    Fixed in 1:1.3.2-1.el8
  • libglvnd-opengl
    Fixed in 1:1.3.2-1.el8
  • libinput-devel
    Fixed in 1.16.3-1.el8
  • libwacom-devel
    Fixed in 1.6-2.el8
  • mesa-libOSMesa-devel
    Fixed in 20.3.3-2.el8
  • mesa-libgbm-devel
    Fixed in 20.3.3-2.el8
  • xorg-x11-drivers
    Fixed in 7.7-30.el8
  • xorg-x11-server-devel
    Fixed in 1.20.10-1.el8
  • xorg-x11-server-source
    Fixed in 1.20.10-1.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • xorg-server
    Fixed in 2:1.20.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • xorg-server
    Fixed in 2:1.20.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • xorg-server
    Fixed in 2:1.20.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • xorg-server
    Fixed in 2:1.18.4-0ubuntu0.9
  • xorg-server-hwe-16.04
    Fixed in 2:1.19.6-1ubuntu4.1~16.04.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • xorg-server
    Fixed in 2:1.19.6-1ubuntu4.5
  • xorg-server-hwe-18.04
    Fixed in 2:1.20.8-2ubuntu2.2~18.04.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • xorg-server
    Fixed in 2:1.20.8-2ubuntu2.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • xorg-server
    Fixed in 2:1.15.1-0ubuntu2.11+esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.