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CVE-2020-14362

Published: 26 August 2020

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.

Notes

AuthorNote
mdeslaur
xorg server is actually the xorg-server package
the xorg package only contains docs

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
xorg-server-lts-vivid
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

upstream Needs triage

xorg-server-lts-wily
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

xorg-server
Launchpad, Ubuntu, Debian
bionic
Released (2:1.19.6-1ubuntu4.5)
trusty
Released (2:1.15.1-0ubuntu2.11+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
focal
Released (2:1.20.8-2ubuntu2.3)
upstream
Released (1.20.9)
xenial
Released (2:1.18.4-0ubuntu0.9)
Patches:
upstream: https://gitlab.freedesktop.org/xorg/xserver/-/commit/2902b78535ecc6821cc027351818b28a5c7fdbdc
xorg-server-hwe-16.04
Launchpad, Ubuntu, Debian
upstream
Released (1.20.9)
xenial
Released (2:1.19.6-1ubuntu4.1~16.04.3)
bionic Does not exist

focal Does not exist

trusty Does not exist

xorg-server-hwe-18.04
Launchpad, Ubuntu, Debian
upstream
Released (1.20.9)
trusty Does not exist

xenial Does not exist

bionic
Released (2:1.20.8-2ubuntu2.2~18.04.2)
focal Does not exist

xorg
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable
(code not present)
xorg-hwe-16.04
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable
(code not present)
xorg-server-lts-utopic
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

xorg-server-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H