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
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Bug :
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memory corruption during the handling of the xls files a context-dependent attacker
can execute arbitrary code.
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(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
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Proof of concept included.
http://www19.zippyshare.com/v/5620945/file.html
