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Re: [ft-devel] details on iPhone exploit caused by FreeType?
From: |
Werner LEMBERG |
Subject: |
Re: [ft-devel] details on iPhone exploit caused by FreeType? |
Date: |
Sat, 09 Jul 2011 06:53:05 +0200 (CEST) |
> I would have this check under default: on line 1013 because other
> cases have good checks already.
But the `default' label continues, while `Unexpected_OtherSubr'
aborts...
> That default is rather strange: "wish me luck". Really?
:-) Obviously, you aren't aware of TeX's warning messages like
I've inserted a begin-math/end-math symbol since I think you left
one out. Proceed, with fingers crossed.
If you process the PDF used as the iPhone exploit with acroread, you
actually get a visible result inspite of the buggy font! In other
words, acroread is extremely fault-tolerant. However, it's luck IMHO
whether the PS font engine can continue or not.
Ideally, FreeType's PS engine should try to be fault-tolerant too.
For example, in case of negative arguments to `callothersubr' it is
possible to simply ignore the opcode and its two arguments. For the
moment, I've decided to abort. Patches to improve this are highly
welcomed.
Werner
- [ft-devel] details on iPhone exploit caused by FreeType?, Werner LEMBERG, 2011/07/08
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Werner LEMBERG, 2011/07/08
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Алексей Подтележников, 2011/07/08
- Re: [ft-devel] details on iPhone exploit caused by FreeType?,
Werner LEMBERG <=
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Алексей Подтележников, 2011/07/09
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Werner LEMBERG, 2011/07/09
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Алексей Подтележников, 2011/07/09
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Werner LEMBERG, 2011/07/10
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Алексей Подтележников, 2011/07/11
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Werner LEMBERG, 2011/07/11
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Алексей Подтележников, 2011/07/14
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Werner LEMBERG, 2011/07/14
- Re: [ft-devel] details on iPhone exploit caused by FreeType?, Алексей Подтележников, 2011/07/14
Re: [ft-devel] details on iPhone exploit caused by FreeType?, Alan Coopersmith, 2011/07/28