CVE-2023-4863

Known Exploited Public Exploit

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)

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 93.99% Top 5%
KEV Since 
Vendor Advisory googleblog.com Vendor Advisory crbug.com
Affected: Google Chrome
Affected: Google libwebp
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html vendor advisory
https://crbug.com/1479274 issue tracking vendor advisory
https://en.bandisoft.com/honeyview/history/ release notes
https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/ third party advisory exploit
https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/ third party advisory
https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863 third party advisory patch
https://security-tracker.debian.org/tracker/CVE-2023-4863 issue tracking third party advisory
https://bugzilla.suse.com/show_bug.cgi?id=1215231 issue tracking third party advisory
https://news.ycombinator.com/item?id=37478403 third party advisory exploit
https://www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks/ third party advisory
https://www.debian.org/security/2023/dsa-5496 mailing list
https://www.debian.org/security/2023/dsa-5497 mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX/ mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645/ mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX/ mailing list
https://lists.debian.org/debian-lts-announce/2023/09/msg00015.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB/ mailing list
https://www.debian.org/security/2023/dsa-5498 third party advisory mailing list
https://security.gentoo.org/glsa/202309-05 third party advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00016.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT/ mailing list
https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/ third party advisory
https://github.com/webmproject/libwebp/releases/tag/v1.3.2 release notes
https://lists.debian.org/debian-lts-announce/2023/09/msg00017.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3/ mailing list
http://www.openwall.com/lists/oss-security/2023/09/21/4 mailing list
https://blog.isosceles.com/the-webp-0day/ third party advisory exploit
http://www.openwall.com/lists/oss-security/2023/09/22/1 mailing list
http://www.openwall.com/lists/oss-security/2023/09/22/3 mailing list
http://www.openwall.com/lists/oss-security/2023/09/22/4 mailing list
http://www.openwall.com/lists/oss-security/2023/09/22/5 mailing list
http://www.openwall.com/lists/oss-security/2023/09/22/8 mailing list
http://www.openwall.com/lists/oss-security/2023/09/22/7 mailing list
http://www.openwall.com/lists/oss-security/2023/09/22/6 mailing list
http://www.openwall.com/lists/oss-security/2023/09/26/1 mailing list
http://www.openwall.com/lists/oss-security/2023/09/26/7 mailing list
http://www.openwall.com/lists/oss-security/2023/09/28/1 mailing list
http://www.openwall.com/lists/oss-security/2023/09/28/2 mailing list
http://www.openwall.com/lists/oss-security/2023/09/28/4 mailing list
https://security.netapp.com/advisory/ntap-20230929-0011/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/ mailing list
https://sethmlarson.dev/security-developer-in-residence-weekly-report-16 exploit
https://www.bentley.com/advisories/be-2023-0001/ third party advisory
https://security.gentoo.org/glsa/202401-10 third party advisory
https://www.vicarius.io/vsociety/posts/zero-day-webp-vulnerability-cve-2023-4863 exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-4863?
CVE-2023-4863 has been scored as a high severity vulnerability.
How to fix CVE-2023-4863?
To fix CVE-2023-4863, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4863 being actively exploited in the wild?
It is confirmed that CVE-2023-4863 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4863?
CVE-2023-4863 affects Google Chrome, Google libwebp.
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