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Date: Tue, 26 Sep 2023 11:43:45 +0200
From: Salvatore Bonaccorso <>
Subject: Re: CVE-2023-4863: libwebp: Heap buffer overflow in
 WebP Codec


On Thu, Sep 21, 2023 at 10:52:50PM +0200, Solar Designer wrote:
> Hi,
> Ideally this should have been brought in here ~10 days ago, but I guess
> better late than never, and I'd like to encourage others to be bringing
> relevant stuff to the list.
> On September 11, Google announced an update to Chrome:
> fixing this issue:
> > Critical CVE-2023-4863: Heap buffer overflow in WebP. Reported by Apple
> > Security Engineering and Architecture (SEAR) and The Citizen Lab at The
> > University of Toronto's Munk School on 2023-09-06
> > 
> > We would also like to thank all security researchers that worked with us
> > during the development cycle to prevent security bugs from ever reaching
> > the stable channel.
> > 
> > Google is aware that an exploit for CVE-2023-4863 exists in the wild.
> With the bug being in a library used by many projects, this made people
> wonder why a CVE was assigned to Chrome rather than to libwebp:

Maybe related to this question in todays CVEs updates there appeared


FWIW, I contacted the assigning CNAs so this can be clarified (e.g. if
one of those needs to be rejected).


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