Re: Double free corruption in JasPer JPEG-2000 implementation (CVE-2015-5203)

[Raphael Geissert <geissert () debian org>]

Hi,

On 16 August 2015 at 20:48, mancha <mancha1 () zoho com> wrote:
> On Sun, Aug 16, 2015 at 05:22:50PM +0200, Gustavo Grieco wrote:
> > A new double free affecting JasPer JPEG-2000 (libjasper 1.900) has
> > been found triggered by function jasper_image_stop_load.  Despite this
> > library is used by many programs (
> > http://www.ece.uvic.ca/~frodo/jasper/#overview), there is no one
> > providing support, so there is no fix so far.
>
> If you email me your crasher I can look into a fix.

Last time I ran zzuf on jasper there were plenty of crashes and bugs
that triggered a high resource consumption - pretty much like the ones
I found on openjpeg at work. They looked less severe, however.

I should still have some samples in another machine, if anyone is
interested in taking a look at those and/or using them as a base for
further fuzzing.

Cheers,
-- 
Raphael Geissert - Debian Developer
www.debian.org - get.debian.net