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

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Message-Id: <5B763620-2E84-428F-9CBB-78913FAA3024@hammerofgod.com>
Date: Mon, 29 Oct 2012 11:32:18 -0700
From: "Thor (Hammer of God)" <thor@...merofgod.com>
To: kaveh ghaemmaghami <kavehghaemmaghami@...glemail.com>
Cc: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: Re: Microsoft Office Excel 2010 memory corruption

So, if you are a user on a system you're saying you can run code that attempts to run other code, and though that code doesn't end up running yet more code that's OK because you're already running code to begin with? 

Dude, you're going to, like, retire off those ZDI checks!
t

Sent from whatever device will keep us from debating which one is better.

On Oct 29, 2012, at 11:12 AM, kaveh ghaemmaghami <kavehghaemmaghami@...glemail.com> wrote:

> thank you Jeff
> please tell me this is not exploitable
> http://www.exploit-db.com/exploits/22237/
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> all crashes which i gave i know is not that easy to exploit i just
> wanted to Proof how easy is to crash MS
> and i wanted to know MS opinion about any flaws
> so i am not going to give any crashes free as far as i can sell  it to
> ZDI which i know is exploitable or i can exploit it for proof of
> concept
> And i will leave other crashes to exploit dev expert and crash
> analyzer to exploit it and enjoying  flaws
> thank you every one for share
> 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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