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  5. CVE-2023-4863

CVE-2023-4863: libwebp: OOB write in BuildHuffmanTable

September 12, 2023 (updated July 9, 2025)

Heap buffer overflow in libwebp allow a remote attacker to perform an out of bounds memory write via a crafted HTML page.

References

  • adamcaudill.com/2023/09/14/whose-cve-is-it-anyway
  • blog.isosceles.com/the-webp-0day
  • bugzilla.suse.com/show_bug.cgi?id=1215231
  • chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html
  • crbug.com/1479274
  • en.bandisoft.com/honeyview/history
  • github.com/ImageMagick/ImageMagick/discussions/6664
  • github.com/advisories/GHSA-j7hp-h8jx-5ppr
  • github.com/dlemstra/Magick.NET/releases/tag/13.3.0
  • github.com/electron/electron/pull/39823
  • github.com/electron/electron/pull/39825
  • github.com/electron/electron/pull/39826
  • github.com/electron/electron/pull/39827
  • github.com/electron/electron/pull/39828
  • github.com/jaredforth/webp/commit/9d4c56e63abecc777df71c702503c3eaabd7dcbc
  • github.com/jaredforth/webp/pull/30
  • github.com/python-pillow/Pillow/pull/7395
  • github.com/qnighy/libwebp-sys2-rs/commit/4560c473a76ec8bd8c650f19ddf9d7a44f719f8b
  • github.com/qnighy/libwebp-sys2-rs/pull/21
  • github.com/webmproject/libwebp
  • github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a
  • github.com/webmproject/libwebp/releases/tag/v1.3.2
  • lists.debian.org/debian-lts-announce/2023/09/msg00015.html
  • lists.debian.org/debian-lts-announce/2023/09/msg00016.html
  • lists.debian.org/debian-lts-announce/2023/09/msg00017.html
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I
  • msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863
  • news.ycombinator.com/item?id=37478403
  • nvd.nist.gov/vuln/detail/CVE-2023-4863
  • pillow.readthedocs.io/en/stable/releasenotes/10.0.1.html
  • rustsec.org/advisories/RUSTSEC-2023-0060.html
  • rustsec.org/advisories/RUSTSEC-2023-0061.html
  • security-tracker.debian.org/tracker/CVE-2023-4863
  • security.gentoo.org/glsa/202309-05
  • security.gentoo.org/glsa/202401-10
  • security.netapp.com/advisory/ntap-20230929-0011
  • sethmlarson.dev/security-developer-in-residence-weekly-report-16
  • stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863
  • www.bentley.com/advisories/be-2023-0001
  • www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks
  • www.debian.org/security/2023/dsa-5496
  • www.debian.org/security/2023/dsa-5497
  • www.debian.org/security/2023/dsa-5498
  • www.mozilla.org/en-US/security/advisories/mfsa2023-40
  • www.vicarius.io/vsociety/posts/zero-day-webp-vulnerability-cve-2023-4863

Code Behaviors & Features

Detect and mitigate CVE-2023-4863 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 10.0.1

Fixed versions

  • 10.0.1

Solution

Upgrade to version 10.0.1 or above.

Impact 8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-787: Out-of-bounds Write

Source file

pypi/Pillow/CVE-2023-4863.yml

Spotted a mistake? Edit the file on GitLab.

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