full-disclosure - Re: [gif2png] long filename Buffer Overrun

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Date: Sun, 13 Dec 2009 16:10:10 +0200
From: Razuel Akaharnath <razuel@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: [gif2png] long filename Buffer Overrun

I see, well according to the bug report, its fixed in 2.5.2-1. I tested that
version itself and sadly the fix isn't there.

On Sun, Dec 13, 2009 at 1:29 AM, Patroklos Argyroudis
<argp@...sus-labs.com>wrote:

> On Sat, Dec 12, 2009 at 10:59:28PM +0200, Razuel Akaharnath wrote:
> > DESCRIPTION:
> > "The gif2png program converts files from the obsolescent Graphic
> Interchange
> > Format to Portable Network Graphics <http://www.libpng.org/pub/png/>.
> The
> > conversion preserves all graphic information, including transparency,
> > perfectly. The gif2png program can even recover data from corrupted
> GIFs."
> >
> > homepage: http://catb.org/~esr/gif2png/<http://catb.org/%7Eesr/gif2png/><
> http://catb.org/%7Eesr/gif2png/>
> >
> > VULNERABILITY:
> > gif2png does not perform proper bounds checking on the size of input
> > filename. The buffer (1025 in size) is easily overrun with a strcpy
> > function.
> >
> > AFFECTED VERSION:
> > latest: 2.5.2
>
> I have reported this to Debian about two months ago:
>
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550978
>
> --
> Patroklos Argyroudis
> http://www.census-labs.com/
>

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