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

[Braden Thomas <bthomas () apple com>]

So these issues are going to be addressed in upcoming 2.4.3, right?  They still affect 2.4.2?

Thanks,

Braden

On Aug 6, 2010, at 11:32 AM, Josh Bressers wrote:

> ----- "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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