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

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Date: Mon, 29 Oct 2012 06:19:16 +0330
From: kaveh ghaemmaghami <kavehghaemmaghami@...glemail.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Microsoft Office Excel 2010 memory corruption

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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