Title     :  Microsoft Office Excel 2007 WriteAV Vulnerability 
Version   :  Microsoft Office professional Plus 2007 SP2
Date      :  2012-11-08
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. 
----  
################################################################################ 
(59c.2fc): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=02f88e00 
ebx=023ef000 
ecx=00000000 
edx=009d0a04 
esi=023ef000 
edi=02f88e28
eip=302d68ca esp=00132eb0 ebp=00132ec0 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+0x2d68ca:
302d68ca 894106          mov     dword ptr [ecx+6],eax ds:0023:00000006=????????
First Chance Exception Type: STATUS_ACCESS_VIOLATION (0xC0000005)
Exception Sub-Type: Write Access Violation

Stack Trace:
Excel!Ordinal40+0x2d68ca
Excel!Ordinal40+0x2da3cd
Excel!Ordinal40+0x2da33a
mso!Ordinal6953+0x1b2
mso!Ordinal3625+0x15a
mso!Ordinal8415+0x41c
mso!Ordinal748+0x6cf
mso!Ordinal2494+0x18d
Excel!Ordinal40+0x265814
Excel!Ordinal40+0x2650d3
Excel!Ordinal40+0x1a1125
Excel!Ordinal40+0x1a2cd5
Excel!Ordinal40+0x1a25f4
Excel!Ordinal40+0x1ac175
Excel!Ordinal40+0x1a3943
Excel!Ordinal40+0x1a3d30
Excel!Ordinal40+0x1a336e
Excel!Ordinal40+0x18f398
Excel!Ordinal40+0x18f0ff
Excel!Ordinal40+0x3093d
Excel!Ordinal40+0x6f630
Excel!Ordinal40+0x6f4db
mso!Ordinal1701+0xebd
mso!Ordinal1701+0xddc
mso!Ordinal1584+0x304
mso!Ordinal1482+0x316
mso!Ordinal9308+0x4bb
mso!Ordinal8194+0x4cf
mso!Ordinal888+0x9d
mso!Ordinal2594+0x538
mso!Ordinal7865+0x125
mso!Ordinal5169+0xa5
mso!Ordinal4629+0x820
mso!Ordinal4369+0xd0
mso!Ordinal3268+0x3ff
mso!Ordinal7696+0x139
mso!Ordinal3268+0x3c0
mso!Ordinal4424+0x663
mso!Ordinal4960+0x1e2
mso!Ordinal387+0x60b
mso!Ordinal3989+0x13c
mso!Ordinal754+0x72
mso!Ordinal3910+0x47
mso!Ordinal4360+0x23c
mso!Ordinal3804+0x3f
mso!Ordinal9064+0x21ed3
mso!Ordinal3594+0x3db
mso!Ordinal387+0x60b
mso!Ordinal3989+0x13c
mso!Ordinal6715+0xa2
mso!Ordinal2180+0x665
mso!Ordinal4294+0x14
mso!Ordinal4620+0x38c
mso!Ordinal6136+0x68a
mso!Ordinal1585+0xb5
USER32!GetDC+0x6d
USER32!GetDC+0x14f
USER32!GetWindowLongW+0x127
USER32!DispatchMessageW+0xf
Excel!Ordinal40+0x28db4
Excel!Ordinal40+0x28ac7
Excel!Ordinal40+0x3b58
Excel!Ordinal40+0x386c
kernel32!RegisterWaitForInputIdle+0x49
Instruction Address: 0x00000000302d68ca

0:000> kd
00132ec0  00132ef8 <Unloaded_ion.dll>+0x132ef7
00132ec4  302da3cd Excel!Ordinal40+0x2da3cd
00132ec8  00132f88 <Unloaded_ion.dll>+0x132f87
00132ecc  0357e5a0 <Unloaded_ion.dll>+0x357e59f
00132ed0  00133180 <Unloaded_ion.dll>+0x13317f
00132ed4  0357e5a0 <Unloaded_ion.dll>+0x357e59f
00132ed8  03332400 <Unloaded_ion.dll>+0x33323ff
00132edc  00000008 <Unloaded_ion.dll>+0x7
00132ee0  03332400 <Unloaded_ion.dll>+0x33323ff
00132ee4  30101614 Excel!Ordinal40+0x101614
00132ee8  00000000
00132eec  30267f92 Excel!Ordinal40+0x267f92
00132ef0  00133194 <Unloaded_ion.dll>+0x133193
00132ef4  00132f1c <Unloaded_ion.dll>+0x132f1b
00132ef8  00132f0c <Unloaded_ion.dll>+0x132f0b
00132efc  302da33a Excel!Ordinal40+0x2da33a
00132f00  023ef000 <Unloaded_ion.dll>+0x23eefff
00132f04  00132f88 <Unloaded_ion.dll>+0x132f87
00132f08  0357e5a0 <Unloaded_ion.dll>+0x357e59f
00132f0c  00132fb8 <Unloaded_ion.dll>+0x132fb7
################################################################################ 
Proof of concept included.
http://www19.zippyshare.com/v/5620945/file.html