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.NET NuGet

GHSA-j646-gj5p-p45g

CefSharp affected by heap buffer overflow in WebP

Published
Sep 21, 2023
Updated
Dec 7, 2024
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed

Blast Radius

2 pkgs affected
.NETCefSharp.Common.NETCefSharp.Common.NETCore

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

Google is aware that an exploit for 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


Updated

There is another related security vulnerability.

There's another related CVE (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

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetCefSharp.Commonall versions116.0.230
.NETNuGetCefSharp.Common.NETCoreall versions116.0.230

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for CefSharp.Common. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update CefSharp.Common to 116.0.230 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j646-gj5p-p45g is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-j646-gj5p-p45g is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-j646-gj5p-p45g. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

**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
O3 Security · Impact-Aware SCA

Is GHSA-j646-gj5p-p45g in your dependencies?

O3 detects GHSA-j646-gj5p-p45g across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.