Actively exploited · Published Sep 12, 2023 · Assigned by Chrome
CVE-2023-4863
High 8.8 Exploited
In plain English
A high-severity out-of-bounds write in Chrome from Google. Attackers are actively exploiting it in the wild (listed by CISA on September 13, 2023). The chance it is exploited in the next 30 days is estimated at 100.0% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)100.0%top 0.0% of all CVEs
Exploited in the wildYesCISA KEV since Sep 13, 2023
Attack tooling1Public PoC
CISA guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Oct 4, 2023.
Official description
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)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 102.15.1-1.el8_8.alma | ALSA-2023:5184 |
| AlmaLinux:9 | firefox | 102.15.1-1.el9_2.alma | ALSA-2023:5200 |
| AlmaLinux:9 | firefox-x11 | 102.15.1-1.el9_2.alma | ALSA-2023:5200 |
| AlmaLinux:8 | libwebp | 1.0.0-8.el8_8.1 | ALSA-2023:5309 |
| AlmaLinux:9 | libwebp | 1.2.0-7.el9_2 | ALSA-2023:5214 |
| AlmaLinux:8 | libwebp-devel | 1.0.0-8.el8_8.1 | ALSA-2023:5309 |
| AlmaLinux:9 | libwebp-devel | 1.2.0-7.el9_2 | ALSA-2023:5214 |
| AlmaLinux:9 | libwebp-tools | 1.2.0-7.el9_2 | ALSA-2023:5214 |
| AlmaLinux:8 | thunderbird | 102.15.1-1.el8_8.alma | ALSA-2023:5201 |
| AlmaLinux:9 | thunderbird | 102.15.1-1.el9_2.alma | ALSA-2023:5224 |
| Alpine:v3.20 | chromium | 116.0.5845.187-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.21 | chromium | 116.0.5845.187-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.22 | chromium | 116.0.5845.187-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.23 | chromium | 116.0.5845.187-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.24 | chromium | 116.0.5845.187-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.20 | firefox-esr | 115.2.1-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.21 | firefox-esr | 115.2.1-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.22 | firefox-esr | 115.2.1-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.23 | firefox-esr | 115.2.1-r0 | ALPINE-CVE-2023-4863 |
| Alpine:v3.20 | libwebp | 1.3.1-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.21 | libwebp | 1.3.1-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.22 | libwebp | 1.3.1-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.23 | libwebp | 1.3.1-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.24 | libwebp | 1.3.1-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.20 | qt5-qtimageformats | 5.15.10_git20230612-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.21 | qt5-qtimageformats | 5.15.10_git20230612-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.22 | qt5-qtimageformats | 5.15.10_git20230612-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.23 | qt5-qtimageformats | 5.15.10_git20230612-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.20 | qt5-qtwebengine | 5.15.15-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.21 | qt5-qtwebengine | 5.15.15-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.22 | qt5-qtwebengine | 5.15.15-r1 | ALPINE-CVE-2023-4863 |
| Alpine:v3.23 | qt5-qtwebengine | 5.15.15-r1 | ALPINE-CVE-2023-4863 |
| Debian:12 | chromium | 117.0.5938.62-1 | DEBIAN-CVE-2023-4863 |
| Debian:13 | chromium | 117.0.5938.62-1 | DEBIAN-CVE-2023-4863 |
| Debian:14 | chromium | 117.0.5938.62-1 | DEBIAN-CVE-2023-4863 |
| Debian:12 | firefox-esr | 102.15.1esr-1~deb12u1 | DEBIAN-CVE-2023-4863 |
| Debian:12 | firefox-esr | 102.15.1esr-1~deb12u1 | DSA-5496-1 |
| Debian:13 | firefox-esr | 115.2.1esr-1 | DEBIAN-CVE-2023-4863 |
| Debian:14 | firefox-esr | 115.2.1esr-1 | DEBIAN-CVE-2023-4863 |
| Debian:12 | libwebp | 1.2.4-0.2+deb12u1 | DSA-5497-1 |
| Debian:12 | libwebp | 1.2.4-0.2+deb12u1 | DEBIAN-CVE-2023-4863 |
| Debian:13 | libwebp | 1.2.4-0.3 | DEBIAN-CVE-2023-4863 |
| Debian:14 | libwebp | 1.2.4-0.3 | DEBIAN-CVE-2023-4863 |
| Debian:12 | thunderbird | 1:102.15.1-1~deb12u1 | DEBIAN-CVE-2023-4863 |
| Debian:12 | thunderbird | 1:102.15.1-1~deb12u1 | DSA-5498-1 |
| Debian:13 | thunderbird | 1:115.2.2-1 | DEBIAN-CVE-2023-4863 |
| Debian:14 | thunderbird | 1:115.2.2-1 | DEBIAN-CVE-2023-4863 |
| Go | github.com/chai2010/webp | 1.1.2-0.20250406010349-76805d5a8860 | GHSA-j7hp-h8jx-5ppr |
| Go | github.com/chai2010/webp | 1.4.0 | GHSA-j7hp-h8jx-5ppr |
| Go | github.com/chai2010/webp | 0.0.0-20250406010349-76805d5a8860 | GHSA-j7hp-h8jx-5ppr |
| NuGet | magick.net-q16-anycpu | 13.3.0 | GHSA-j7hp-h8jx-5ppr |
| NuGet | magick.net-q16-hdri-anycpu | 13.3.0 | GHSA-j7hp-h8jx-5ppr |
| NuGet | magick.net-q16-x64 | 13.3.0 | GHSA-j7hp-h8jx-5ppr |
| NuGet | magick.net-q8-anycpu | 13.3.0 | GHSA-j7hp-h8jx-5ppr |
| NuGet | magick.net-q8-openmp-x64 | 13.3.0 | GHSA-j7hp-h8jx-5ppr |
| NuGet | magick.net-q8-x64 | 13.3.0 | GHSA-j7hp-h8jx-5ppr |
| NuGet | skiasharp | 2.88.6 | GHSA-j7hp-h8jx-5ppr |
| PyPI | pillow | 10.0.1 | PYSEC-2026-1794 |
| PyPI | pillow | 10.0.1 | GHSA-j7hp-h8jx-5ppr |
| Rocky Linux:8 | firefox | 0:102.15.1-1.el8_8 | RLSA-2023:5184 |
| Rocky Linux:8 | libwebp | 0:1.0.0-8.el8_8.1 | RLSA-2023:5309 |
| Rocky Linux:9 | libwebp | 0:1.2.0-7.el9_2 | RLSA-2023:5214 |
| Rocky Linux:8 | thunderbird | 0:102.15.1-1.el8_8 | RLSA-2023:5201 |
| Ubuntu:22.04:LTS | libwebp | 1.2.2-2ubuntu0.22.04.2 | USN-6369-1 |
| Ubuntu:22.04:LTS | libwebp | 1.2.2-2ubuntu0.22.04.2 | UBUNTU-CVE-2023-4863 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.15.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2023-4863 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.15.1+build1-0ubuntu0.22.04.1 | USN-6368-1 |
| npm | electron | 24.8.3 | GHSA-j7hp-h8jx-5ppr |
| npm | electron | 25.8.1 | GHSA-j7hp-h8jx-5ppr |
| npm | electron | 27.0.0-beta.2 | GHSA-j7hp-h8jx-5ppr |
| npm | electron | 26.2.1 | GHSA-j7hp-h8jx-5ppr |
| npm | electron | 22.3.24 | GHSA-j7hp-h8jx-5ppr |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html
- https://crbug.com/1479274
- https://en.bandisoft.com/honeyview/history/
- https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/
- https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863
- https://security-tracker.debian.org/tracker/CVE-2023-4863
- https://bugzilla.suse.com/show_bug.cgi?id=1215231
- https://news.ycombinator.com/item?id=37478403
- https://www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks/
- https://www.debian.org/security/2023/dsa-5496
- https://www.debian.org/security/2023/dsa-5497
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX/
- https://lists.debian.org/debian-lts-announce/2023/09/msg00015.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB/
- https://www.debian.org/security/2023/dsa-5498
- https://security.gentoo.org/glsa/202309-05
- https://lists.debian.org/debian-lts-announce/2023/09/msg00016.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT/
- https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/
- https://github.com/webmproject/libwebp/releases/tag/v1.3.2
- https://lists.debian.org/debian-lts-announce/2023/09/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3/
- http://www.openwall.com/lists/oss-security/2023/09/21/4
- https://blog.isosceles.com/the-webp-0day/
- http://www.openwall.com/lists/oss-security/2023/09/22/1
- http://www.openwall.com/lists/oss-security/2023/09/22/3
- http://www.openwall.com/lists/oss-security/2023/09/22/4
- http://www.openwall.com/lists/oss-security/2023/09/22/5
- http://www.openwall.com/lists/oss-security/2023/09/22/8
- http://www.openwall.com/lists/oss-security/2023/09/22/7
- http://www.openwall.com/lists/oss-security/2023/09/22/6
- http://www.openwall.com/lists/oss-security/2023/09/26/1
- http://www.openwall.com/lists/oss-security/2023/09/26/7
- http://www.openwall.com/lists/oss-security/2023/09/28/1
- http://www.openwall.com/lists/oss-security/2023/09/28/2
- http://www.openwall.com/lists/oss-security/2023/09/28/4