full-disclosure - Re: Microsoft Office Excel 2010 memory corruption

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Message-ID: <CAPMrQTTZLb2PPH0dqgc5Hk8RjcyXAevduDGiFWNN66zKju2CUQ@mail.gmail.com>
Date: Mon, 29 Oct 2012 10:56:00 +0200
From: Julius Kivimäki <julius.kivimaki@...il.com>
To: kaveh ghaemmaghami <kavehghaemmaghami@...glemail.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Microsoft Office Excel 2010 memory corruption

It reminds me my question from GNAA Security Team when i got seek
from their exploitions.

How can i make sure a software is not exploitable? (( The short answer is
simple assume every software is exploitable and remove it. ))
2012/10/29 kaveh ghaemmaghami <kavehghaemmaghami@...glemail.com>

> It reminds me my question from VUPEN Security Team when i got seek
> from their exploitions
>
> How can i make sure a crash is not exploitable? (( The short answer is
> simple assume every crash is exploitable and just fix it.))
>
> Best Regards
>
> On Mon, Oct 29, 2012 at 5:47 AM, kaveh ghaemmaghami
> <kavehghaemmaghami@...glemail.com> wrote:
> > Hello list
> >
> > Dear Peter and others please take a look @ it
> >
> > Best Regards
> > Kaveh Ghaemmaghami
> >
> > Title     :  Microsoft Office Excel 2010 memory corruption
> > Version   :  Microsoft Office professional Plus 2010
> > Date      :  2012-10-27
> > Vendor    :  http://office.microsoft.com
> > Impact    :  Med/High
> > Contact   :  coolkaveh [at] rocketmail.com
> > Twitter   :  @coolkaveh
> > tested    :  XP SP3 ENG
> >
> ###############################################################################
> > Bug :
> > ----
> > memory corruption during the handling of the xls files a
> > context-dependent attacker
> > can execute arbitrary code  (need investigate )
> > ----
> >
> ################################################################################
> > (b4c.1350): Access violation - code c0000005 (first chance)
> > First chance exceptions are reported before any exception handling.
> > This exception may be expected and handled.
> > eax=00000584
> > ebx=00135070
> > ecx=00001000
> > edx=0000105f
> > esi=06a80800
> > edi=00000040
> > eip=301ce0d0
> > esp=001302f0
> > ebp=00131d6c iopl=0         nv up ei pl zr na pe nc
> > cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000
> efl=00010246
> > *** ERROR: Symbol file could not be found.  Defaulted to export
> > symbols for Excel.exe -
> > Excel!Ordinal40+0x1ce0d0:
> > 301ce0d0 668b5008        mov     dx,word ptr [eax+8]
>  ds:0023:0000058c=????
> >
> ################################################################################
> > Proof of concept included.
> > http://www36.zippyshare.com/v/48422905/file.html
>
> _______________________________________________
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