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List: oss-security
Subject: Re: [oss-security] CVE Request -- FreeType -- Memory corruption
From: Josh Bressers <bressers () redhat ! com>
Date: 2010-08-06 18:32:07
Message-ID: 755900676.738661281119527512.JavaMail.root () zmail01 ! collab ! prod ! int ! phx2 ! redhat ! com
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----- "Jan Lieskovsky" <jlieskov@redhat.com> wrote:
>
> 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
>
I'm going to call this improper bounds checking.
Use CVE-2010-2805
> [2] https://savannah.nongnu.org/bugs/?30656
> Patch at:
> http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=c06da1ad34663da7b6fc39b030dc3ae185b96557
>
We'll also call this improper bounds checking. I'm giving it its own ID, as
the various versions affected will no doubt differ.
Use CVE-2010-2806
> [3] https://savannah.nongnu.org/bugs/?30657
> Patch at:
> http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=346f1867fd32dae8f56e5b482d1af98f626804ac
>
I'm not exactly sure what to call this one. It seems to involve improper
type comparisons (int vs long).
Use CVE-2010-2807
> > 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
Use CVE-2010-2808 for this one.
Thanks.
--
JB
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