CefSharp affected by heap buffer overflow in WebP
Date: 2023-09
Affected: nuget/CefSharp.Common.NETCore, nuget/CefSharp.Common
Attack vector: other
Category: vulnerability-disclosure
Severity: Critical

**Google is aware that an exploit for [CVE-2023-4863](https://www.cve.org/CVERecord?id=CVE-2023-4863) exists in the wild.** ### Description Heap buffer overflow in WebP in Google Chrome prior to 116.0.5845.187 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical) ### References - https://www.cve.org/CVERecord?id=CVE-2023-4863 - https://nvd.nist.gov/vuln/detail/CVE-2023-4863 - https://www.techtarget.com/searchsecurity/news/366551978/Browser-companies-patch-critical-zero-day-vulnerability --- **Updated** There is another related security vulnerability. > There's another related CVE ([CVE-2023-5217](https://nvd.nist.gov/vuln/detail/CVE-2023-5217)) that is fixed in Chromium 117.0.5938.132. This one is triggered by WebCodecs API encoder usage, so a workaround for older versions is to disable the WebCodecs API (`--disable-blink-features=WebCodecs`). As per https://magpcss.org/ceforum/viewtopic.php?f=6&t=19551#p54150


Mitigations:

Architectural layers (MAESTRO):