Check for subdirectories and relative paths

lib/msf/core/exploit/file_dropper.rb

@@ -269,7 +269,8 @@ module Exploit::FileDropper
           session.shell_command_token('pwd').strip
         end
 
-      return true if path == pwd
+      # Check for subdirectories and relative paths
+      return true if pwd.include?(path)
     end
 
     false