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Date: Mon, 5 Jul 2010 12:10:58 -0400
From: Glenn Randers-Pehrson <glennrp@...il.com>
To: "PNG/MNG implementation discussion list" <png-mng-implement@...ts.sourceforge.net>
Cc: oss-security@...ts.openwall.com
Subject: Re: [png-mng-implement] CVE Request -- libpng v1.4.3 
	and v1.2.44 -- memory leak while processing PNG image with malformed sCAL 
	chunks

I did not intend to reveal the "crashing PNG" before
Firefox 3.5.7 had been released.

Glenn

On Mon, Jul 5, 2010 at 7:32 AM, Marcus Meissner <meissner@...e.de> wrote:
> On Wed, Jun 30, 2010 at 05:22:40PM +0200, Marcus Meissner wrote:
>> On Mon, Jun 28, 2010 at 04:26:06PM -0400, Josh Bressers wrote:
>> >
>> > ----- "Jan Lieskovsky" <jlieskov@...hat.com> wrote:
>> >
>> > > Hi Steve, vendors,
>> > >
>> > >    libpng upstream has released latest v1.4.3 and v1.2.44 versions,
>> > > addressing two
>> > > security issues:
>> > > [a], out-of-bounds write to memory -- this already got a CVE id of
>> > > "CVE-2010-1205",
>> > > [b], memory-leak bug, involving images with malformed sCAL chunks,
>> > > which could
>> > >     lead to an application crash.
>> > >
>> > > References:
>> > >    [1] http://www.libpng.org/pub/png/libpng.html
>> > >    [2] https://bugzilla.redhat.com/show_bug.cgi?id=608644
>> > >
>> > > Steve, could you allocate a CVE id for the [b] issue?
>> > >
>> >
>> > Please use CVE-2010-2249 for issue [b].
>>
>> oss-sec, png-mng-implement ... do you have testimages or a reproducer for the sCAL issue?
>>
>> It would be helpful for our QA :/
>
> As found on:
> http://code.google.com/p/chromium/issues/detail?id=45983
>
> The sample crashing PNG is:
> http://www.ee.oulu.fi/~aki/spark.png
>
> Ciao, Marcus
>
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