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Date: Fri, 22 Sep 2023 12:54:11 +0200
From: Solar Designer <solar@...nwall.com>
To: oss-security@...ts.openwall.com
Cc: Vincent Rabaud <vrabaud@...gle.com>
Subject: Re: CVE-2023-4863: libwebp: Heap buffer overflow in WebP Codec

On Fri, Sep 22, 2023 at 07:28:17AM +0200, Hanno B??ck wrote:
> On Thu, 21 Sep 2023 22:52:50 +0200 Solar Designer <solar@...nwall.com> wrote:
> 
> > However, another maybe-important one also made it into 1.3.2:
> > 
> > commit 95ea5226c870449522240ccff26f0b006037c520
> > Author: Vincent Rabaud <vrabaud@...gle.com>
> > Date:   Mon Sep 11 16:06:08 2023 +0200
> > 
> >     Fix invalid incremental decoding check.
> 
> It does not look to me that this fix is in 1.3.2:
> https://github.com/webmproject/libwebp/commits/v1.3.2
> 
> I've seen this commit as well and have been wondering for a few days if
> we'll hear about abother libwebp issue soon.

Oh, you're correct - this commit is _not_ in 1.3.2.

I was looking at the main branch and wrongly assumed that all I see in
there before:

commit ca332209cb5567c9b249c86788cb2dbf8847e760 (tag: v1.3.2, origin/1.3.2)

is in 1.3.2.  However, that commit tagged 1.3.2 got into main as part of
a merge commit, by which point main already had other commits including
95ea5226c870449522240ccff26f0b006037c520 that were not in 1.3.2 branch/tag.

So there may be 1 to 3 commits fixing more security issues after 1.3.2.

Thank you for correcting me!

Alexander

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