VulnerabilityAnalyzed

CVE-2023-4863

Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

KEVHIGH 8.8EPSS 100.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

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)

CVSS 3.1: 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 99.98% probability · 100th percentile
CISA KEV: Listed 13 September 2023 · due 4 October 2023
Weakness: CWE-787
Affected: google/chrome · fedoraproject/fedora · debian/debian linux · mozilla/firefox · mozilla/thunderbird · microsoft/edge chromium · microsoft/teams · microsoft/webp image extension · webmproject/libwebp · netapp/active iq unified manager · bentley/seequent leapfrog · bandisoft/honeyview
Source: chrome-cve-admin@google.com

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html?m=1; https://nvd.nist.gov/vuln/detail/CVE-2023-4863

References

http://www.openwall.com/lists/oss-security/2023/09/21/4Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/1Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/3Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/4Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/5Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/6Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/7Mailing List
http://www.openwall.com/lists/oss-security/2023/09/22/8Mailing List
http://www.openwall.com/lists/oss-security/2023/09/26/1Mailing List
http://www.openwall.com/lists/oss-security/2023/09/26/7Mailing List
http://www.openwall.com/lists/oss-security/2023/09/28/1Mailing List
http://www.openwall.com/lists/oss-security/2023/09/28/2Mailing List
http://www.openwall.com/lists/oss-security/2023/09/28/4Mailing List
https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/Third Party Advisory
https://blog.isosceles.com/the-webp-0day/Exploit, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1215231Issue Tracking, Third Party Advisory
https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.htmlVendor Advisory
https://crbug.com/1479274Issue Tracking, Vendor Advisory
https://en.bandisoft.com/honeyview/history/Release Notes
https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17aPatch
https://github.com/webmproject/libwebp/releases/tag/v1.3.2Release Notes
https://lists.debian.org/debian-lts-announce/2023/09/msg00015.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00016.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00017.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT/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/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3/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/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX/Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB/Mailing List

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.