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CVE-2018-20843

Published: 24 June 2019

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

Notes

AuthorNote
mdeslaur
xmlparse.c doesn't appear to be built in the firefox package

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
cosmic Not vulnerable
(code-not-compiled)
disco Not vulnerable
(code-not-compiled)
eoan Not vulnerable
(code-not-compiled)
focal Not vulnerable
(code-not-compiled)
groovy Not vulnerable
(code-not-compiled)
hirsute Not vulnerable
(code-not-compiled)
impish Not vulnerable
(code-not-compiled)
jammy Not vulnerable
(code-not-compiled)
kinetic Not vulnerable
(code-not-compiled)
lunar Not vulnerable
(code-not-compiled)
mantic Not vulnerable
(code-not-compiled)
trusty Not vulnerable
(code-not-compiled)
upstream Needs triage

xenial Not vulnerable
(code-not-compiled)
apr-util
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
cosmic Not vulnerable
(code-not-compiled)
disco Not vulnerable
(code-not-compiled)
eoan Not vulnerable
(code-not-compiled)
focal Not vulnerable
(code-not-compiled)
groovy Not vulnerable
(code-not-compiled)
hirsute Not vulnerable
(code-not-compiled)
impish Not vulnerable
(code-not-compiled)
jammy Not vulnerable
(code-not-compiled)
kinetic Not vulnerable
(code-not-compiled)
lunar Not vulnerable
(code-not-compiled)
mantic Not vulnerable
(code-not-compiled)
trusty Not vulnerable
(code-not-compiled)
upstream Needs triage

xenial Not vulnerable
(code-not-compiled)
audacity
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(uses system expat)
ayttm
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

cableswig
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

cadaver
Launchpad, Ubuntu, Debian
bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

trusty Does not exist

upstream Needs triage

xenial Needs triage

cmake
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
cosmic Not vulnerable
(code-not-compiled)
disco Not vulnerable
(code-not-compiled)
eoan Not vulnerable
(code-not-compiled)
focal Not vulnerable
(code-not-compiled)
groovy Not vulnerable
(code-not-compiled)
hirsute Not vulnerable
(code-not-compiled)
impish Not vulnerable
(code-not-compiled)
jammy Not vulnerable
(code-not-compiled)
kinetic Not vulnerable
(code-not-compiled)
lunar Not vulnerable
(code-not-compiled)
mantic Not vulnerable
(code-not-compiled)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code-not-compiled)
coin3
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Not vulnerable
(uses system expat)
groovy Ignored
(end of life)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Needed

upstream Needs triage

xenial Needed

expat
Launchpad, Ubuntu, Debian
bionic
Released (2.2.5-3ubuntu0.1)
cosmic
Released (2.2.6-1ubuntu0.18.10)
disco
Released (2.2.6-1ubuntu0.19.04)
eoan
Released (2.2.6-2)
focal
Released (2.2.6-2)
groovy
Released (2.2.6-2)
hirsute
Released (2.2.6-2)
impish
Released (2.2.6-2)
jammy
Released (2.2.6-2)
kinetic
Released (2.2.6-2)
lunar
Released (2.2.6-2)
mantic
Released (2.2.6-2)
trusty
Released (2.1.0-4ubuntu1.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (2.2.6-2)
xenial
Released (2.1.0-7ubuntu0.16.04.4)
Patches:
upstream: https://github.com/libexpat/libexpat/commit/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
firefox
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Not vulnerable

focal Not vulnerable

groovy Not vulnerable

hirsute Not vulnerable

impish Not vulnerable

jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

mantic Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Not vulnerable

gdcm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Not vulnerable
(uses system expat)
upstream Needs triage

xenial Not vulnerable
(uses system expat)
ghostscript
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
cosmic Not vulnerable
(code-not-compiled)
disco Not vulnerable
(code-not-compiled)
eoan Not vulnerable
(code-not-compiled)
focal Not vulnerable
(code-not-compiled)
groovy Not vulnerable
(code-not-compiled)
hirsute Not vulnerable
(code-not-compiled)
impish Not vulnerable
(code-not-compiled)
jammy Not vulnerable
(code-not-compiled)
kinetic Not vulnerable
(code-not-compiled)
lunar Not vulnerable
(code-not-compiled)
mantic Not vulnerable
(code-not-compiled)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code-not-compiled)
insighttoolkit
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

insighttoolkit4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Needed

kompozer
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

libparagui1.1
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

libxmltok
Launchpad, Ubuntu, Debian
bionic
Released (1.2-4ubuntu0.18.04.1~esm1)
Available with Ubuntu Pro
focal
Released (1.2-4ubuntu0.20.04.1~esm1)
Available with Ubuntu Pro
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy
Released (1.2-4ubuntu0.22.04.1~esm1)
Available with Ubuntu Pro
kinetic Ignored
(end of life, was needed)
lunar Ignored
(end of life, was needed)
mantic Needed

trusty Ignored
(end of standard support)
upstream Needs triage

xenial
Released (1.2-3ubuntu0.16.04.1~esm2)
Available with Ubuntu Pro
matanza
Launchpad, Ubuntu, Debian
bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

trusty Does not exist

upstream Needs triage

xenial Needs triage

poco
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Not vulnerable
(uses system expat)
upstream Needs triage

xenial Not vulnerable
(uses system expat)
simgear
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(uses system expat)
sitecopy
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Does not exist

upstream Not vulnerable
(uses system expat)
xenial Not vulnerable
(uses system expat)
smart
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
cosmic Not vulnerable
(code-not-compiled)
disco Not vulnerable
(code-not-compiled)
eoan Not vulnerable
(code-not-compiled)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code-not-compiled)
swish-e
Launchpad, Ubuntu, Debian
bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

trusty Does not exist

upstream Needs triage

xenial Needs triage

tdom
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Ignored
(end of life)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(uses system expat)
texlive-bin
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
cosmic Not vulnerable
(code-not-compiled)
disco Not vulnerable
(code-not-compiled)
eoan Not vulnerable
(code-not-compiled)
focal Not vulnerable
(code-not-compiled)
groovy Not vulnerable
(code-not-compiled)
hirsute Not vulnerable
(code-not-compiled)
impish Not vulnerable
(code-not-compiled)
jammy Not vulnerable
(code-not-compiled)
kinetic Not vulnerable
(code-not-compiled)
lunar Not vulnerable
(code-not-compiled)
mantic Not vulnerable
(code-not-compiled)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code-not-compiled)
thunderbird
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Not vulnerable

focal Not vulnerable

groovy Not vulnerable

hirsute Not vulnerable

impish Not vulnerable

jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

mantic Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Not vulnerable

vnc4
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(end of life)
disco Not vulnerable
(code not present)
eoan Not vulnerable
(code not present)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Needed

upstream Needed

xenial Needed

vtk
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty
Released (5.8.0-14.1ubuntu3+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (5.10.1+dfsg-2.1ubuntu0.1~esm1)
Available with Ubuntu Pro
wbxml2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
cosmic Not vulnerable
(uses system expat)
disco Not vulnerable
(uses system expat)
eoan Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
groovy Not vulnerable
(uses system expat)
hirsute Not vulnerable
(uses system expat)
impish Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
mantic Not vulnerable
(uses system expat)
trusty Does not exist

upstream Not vulnerable
(uses system expat)
xenial Not vulnerable
(uses system expat)
wxwidgets2.6
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

wxwidgets2.8
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

xmlrpc-c
Launchpad, Ubuntu, Debian
bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

trusty Needs triage

upstream Needs triage

xenial Needs triage

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H