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CVE-2022-43680

Published: 24 October 2022

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.

Notes

AuthorNote
sbeattie
paraview uses system expat
xotcl uses system expat
poco uses system expat
gdcm uses system expat
audacity uses system expat
simgear uses system expat
coin3 uses system expat as of 4.0.0~CMake~6f54f1602475+ds1-1
sitecopy uses system expat since 1:0.16.0-1 (dapper!)
mdeslaur
apache2 uses system expat
apr-util uses system expat
cmake uses system expat
ghostscript uses system expat

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
focal Ignored
(bundled deps handled by upstream in new versions)
jammy Not vulnerable
(code not present)
trusty Ignored
(end of standard support)
upstream Needs triage

kinetic Not vulnerable
(code not present)
lunar Not vulnerable
(code not present)
bionic Ignored
(end of standard support, was needs-triage)
xenial Ignored
(end of standard support)
xmlrpc-c
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

trusty Needs triage

upstream Needs triage

xenial Needs triage

cableswig
Launchpad, Ubuntu, Debian
jammy Does not exist

bionic Does not exist

focal Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

expat
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty
Released (2.1.0-4ubuntu1.4+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
kinetic
Released (2.4.8-2ubuntu0.22.10.1)
bionic
Released (2.2.5-3ubuntu0.8)
focal
Released (2.2.9-1ubuntu0.6)
jammy
Released (2.4.7-1ubuntu0.2)
xenial
Released (2.1.0-7ubuntu0.16.04.5+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
lunar
Released (2.5.0-1)
Patches:
upstream: https://github.com/libexpat/libexpat/commit/56967f83d68d5fc750f9e66a9a76756c94c7c173
apache2
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(uses system expat)
xenial Not vulnerable
(uses system expat)
bionic Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
upstream Needs triage

kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
apr-util
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(uses system expat)
xenial Not vulnerable
(uses system expat)
bionic Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
upstream Needs triage

kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
cmake
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Not vulnerable
(uses system expat)
bionic Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
upstream Needs triage

kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
ghostscript
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Not vulnerable
(uses system expat)
bionic Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
upstream Needs triage

kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
texlive-bin
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Not vulnerable
(code-not-compiled)
bionic Not vulnerable
(code-not-compiled)
focal Not vulnerable
(code-not-compiled)
jammy Not vulnerable
(code-not-compiled)
upstream Needs triage

lunar Not vulnerable
(code-not-compiled)
kinetic Not vulnerable
(code-not-compiled)
vnc4
Launchpad, Ubuntu, Debian
trusty Needs triage

bionic Needs triage

focal Does not exist

jammy Does not exist

upstream Needs triage

xenial Needs triage

wbxml2
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

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

swish-e
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
bionic Needs triage

focal Needs triage

jammy Needs triage

upstream Needs triage

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

lunar Needs triage

ayttm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

cadaver
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

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

coin3
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
trusty Needs triage

upstream Needs triage

xenial Needs triage

kinetic Not vulnerable
(uses system expat)
lunar Not vulnerable
(uses system expat)
gdcm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
trusty Not vulnerable
(uses system expat)
upstream Needs triage

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

focal Does not exist

jammy Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

insighttoolkit4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system expat)
focal Not vulnerable
(uses system expat)
jammy Not vulnerable
(uses system expat)
trusty Ignored
(end of standard support)
upstream Needs triage

kinetic Not vulnerable
(uses system expat)
xenial Needs triage

lunar Not vulnerable
(uses system expat)
libxmltok
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

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

matanza
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

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

smart
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-compiled)
focal Does not exist

jammy Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

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

focal Needs triage

jammy Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

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

thunderbird
Launchpad, Ubuntu, Debian
focal Ignored
(bundled deps handled by upstream in new versions)
jammy Ignored
(bundled deps handled by upstream in new versions)
lunar Ignored
(bundled deps handled by upstream in new versions)
trusty Ignored
(end of standard support)
upstream Needs triage

kinetic Ignored
(end of life, was needs-triage)
bionic Ignored
(end of standard support, was needs-triage)
xenial Ignored
(end of standard support)
vtk
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

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