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Date: Mon, 5 Jul 2010 13:32:37 +0200
From: Marcus Meissner <meissner@...e.de>
To: oss-security@...ts.openwall.com,
	png-mng-implement@...ts.sourceforge.net
Subject: Re: CVE Request -- libpng v1.4.3 and v1.2.44 -- memory leak while processing PNG image with malformed sCAL chunks

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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