support RHOST/RPORT

Author: busterb

modules/exploits/linux/misc/drb_remote_codeexec.rb

@@ -41,7 +41,10 @@ def initialize(info = {})
 
       register_options(
         [
-          OptString.new('URI', [true, "The dRuby URI of the target host (druby://host:port)", ""]),
+          OptString.new('URI',
+            "The URI of the target host (druby://host:port) (overrides RHOST/RPORT)"),
+          Opt::RHOST(nil, false),
+          Opt::RPORT(8787)
         ])
   end
 
@@ -94,7 +97,11 @@ def method_syscall(p)
   end
 
   def exploit
-    serveruri = datastore['URI']
+    unless datastore['URI'].blank?
+      serveruri = datastore['URI']
+    else
+      serveruri = "druby://#{datastore['RHOST']}:#{datastore['RPORT']}"
+    end
 
     DRb.start_service
     p = DRbObject.new_with_uri(serveruri)