oss-security - Re: CVE Request -- FreeType -- Memory corruption flaw by processing certain LWFN fonts + three more

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Date: Fri, 06 Aug 2010 18:01:50 +0200
From: Jan Lieskovsky <jlieskov@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>, Werner Lemberg <wl@....org>
Subject: Re: CVE Request -- FreeType -- Memory corruption flaw
 by processing certain LWFN fonts + three more

Hi all,

   just for more complete list. There are more of them:
     [1] https://savannah.nongnu.org/bugs/?30644
         Patch at:  http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=45a3c76b547511fa9d97aca34b150a0663257375
     [2] https://savannah.nongnu.org/bugs/?30656
         Patch at: http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=c06da1ad34663da7b6fc39b030dc3ae185b96557
     [3] https://savannah.nongnu.org/bugs/?30657
         Patch at: http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=346f1867fd32dae8f56e5b482d1af98f626804ac
   plus that one below (but you probably already noticed).

Thanks && Regards, Jan.
--
Jan iankko Lieskovsky / Red Hat Security Response Team


Jan Lieskovsky wrote:
> Hi Steve, vendors,
> 
>   A memory corruption flaw was found in the way FreeType font rendering 
> engine
> processed certain Adobe Type 1 Mac Font File (LWFN) fonts. An attacker
> could use this flaw to create a specially-crafted font file that, when
> opened, would cause an application linked against libfreetype to crash,
> or, possibly execute arbitrary code.
> 
> Upstream bug report:
>   [1] https://savannah.nongnu.org/bugs/?30658
> 
> Public reproducer:
>   [2] http://alt.swiecki.net/j/f/sigsegv31.ttf
> 
> Upstream changeset:
>   [3] 
> http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=81f3472c0ba7b8f6466e2e214fa8c1c17fade975 
> 
> 
> References:
>   [4] https://bugzilla.redhat.com/show_bug.cgi?id=621907
> 
> Credit: Robert Swiecki
> 
> Could you allocate a CVE id for this?
> 
> Thanks && Regards, Jan.
> -- 
> Jan iankko Lieskovsky / Red Hat Security Response Team

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