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CVE-2023-4863

Published: 12 September 2023

Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)

Notes

AuthorNote
alexmurray
The Debian chromium source package is called chromium-browser
in Ubuntu
mdeslaur
starting with Ubuntu 19.10, the chromium-browser package is just
a script that installs the Chromium snap
rodrigo-zaiden
in libwebp source, it seems like the affected versions
starts from 0.5.0, with a high probability that the commit f75dfbf2 is
the one adding the issue. I can be wrong in my assumption but, at least,
the reproducer available in the the-webp-0day blog post, reproduces in
0.5.0 but not in 0.4.4, and the buffer huffman_tables was added in the
mentioned commit.
in Ubuntu, libwebp versions earlier than 0.5.0 does not
contain the affected code, hence are probably not affected.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
chromium-browser
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
focal Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
lunar Not vulnerable
(code not present)
mantic Not vulnerable
(code not present)
trusty Ignored
(end of standard support)
upstream
Released
xenial Ignored
(end of standard support)
firefox
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
focal
Released (117.0.1+build2-0ubuntu0.20.04.1)
jammy Not vulnerable
(code not present)
lunar Not vulnerable
(code not present)
mantic Not vulnerable
(code not present)
trusty Ignored
(end of standard support)
upstream
Released (117.0.1)
xenial Ignored
(end of standard support)
libwebp
Launchpad, Ubuntu, Debian
bionic
Released (0.6.1-2ubuntu0.18.04.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
focal
Released (0.6.1-2ubuntu0.20.04.3)
jammy
Released (1.2.2-2ubuntu0.22.04.2)
lunar
Released (1.2.4-0.1ubuntu0.23.04.2)
mantic
Released (1.2.4-0.2ubuntu1)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)
Patches:
upstream: https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a
upstream: https://github.com/webmproject/libwebp/commit/8bacd63a6de1cc091f85a1692390401e7bbf55ac
upstream: https://github.com/webmproject/libwebp/commit/801d2be12dba966233c21f850490203eb1acf014
thunderbird
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
focal
Released (1:102.15.1+build1-0ubuntu0.20.04.1)
jammy
Released (1:102.15.1+build1-0ubuntu0.22.04.1)
lunar
Released (1:102.15.1+build1-0ubuntu0.23.04.1)
mantic
Released (1:115.2.3+build1-0ubuntu1)
trusty Ignored
(end of standard support)
upstream
Released (115.2.2)
xenial Ignored
(end of standard support)

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H