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CVE-2023-1999

Published: 8 May 2023

There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine
mdeslaur
starting with Ubuntu 22.04, the firefox package is just a script
that installs the Firefox snap

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
libwebp
Launchpad, Ubuntu, Debian
xenial
Released (0.4.4-1ubuntu0.1~esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
bionic
Released (0.6.1-2ubuntu0.18.04.2)
focal
Released (0.6.1-2ubuntu0.20.04.2)
jammy
Released (1.2.2-2ubuntu0.22.04.1)
kinetic
Released (1.2.2-2ubuntu0.22.10.1)
lunar
Released (1.2.4-0.1ubuntu0.23.04.1)
trusty Needs triage

upstream Needs triage

mantic
Released (1.2.4-0.1ubuntu1)
Patches:

upstream: https://github.com/webmproject/libwebp/commit/a486d800b60d0af4cc0836bf7ed8f21e12974129
firefox
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(112.0.2+build1-0ubuntu0.18.04.1)
focal Not vulnerable

jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

trusty Ignored
(end of standard support)
upstream
Released (112.0-1)
xenial Ignored
(end of standard support)
mantic Not vulnerable

Patches:
upstream: https://hg.mozilla.org/releases/mozilla-esr102/rev/53b805c752ff23080e100eda2b3b4280d4370b2e

mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

mozjs52
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

mozjs78
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Needs triage

lunar Ignored
(end of life, was needs-triage)
trusty Does not exist

upstream Needs triage

xenial Does not exist

kinetic Ignored
(end of life, was needs-triage)
mantic Does not exist

mozjs91
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Needs triage

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

thunderbird
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support, was needed)
trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)
jammy Ignored
(bundled deps handled by new versions)
lunar Ignored
(end of life, was ignored [bundled deps handled by new versions])
kinetic Ignored
(end of life, was needed)
focal Ignored
(bundled deps handled by new versions)
mantic Ignored
(bundled deps handled by new versions)

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