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Re: Microsoft Office Excel 2010 memory corruption
From: Julius Kivimäki <julius.kivimaki () gmail com>
Date: Mon, 29 Oct 2012 10:56:00 +0200

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 () googlemail 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 () googlemail 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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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

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