Added some remote access to etcd checks.

src/modules/discovery/etcd.py

@@ -0,0 +1,67 @@
+import json
+import logging
+
+import requests
+
+from ...core.events import handler
+from ...core.events.types import Event, OpenPortEvent, Service
+from ...core.types import Hunter
+
+"""Etcd is a DB that stores cluster's data,
+    it contains configuration and current state information, and might contain secrets"""
+#services:
+
+class etcdRemoteWriteAccessEvent(Service, Event):
+    """Remote write from anonymous user can give him full control over the kubernetes cluster"""
+    def __init__(self):
+        Service.__init__(self, name="Etcd Remote Write Access Event")
+class etcdRemoteReadAccessEvent(Service, Event):
+    """Remote read access from anonymous user might expose cluster exploits and secrets, more."""
+    def __init__(self):
+        Service.__init__(self, name="Etcd Remote Read Access Event")
+
+"event handlers"
+@handler.subscribe(OpenPortEvent, predicate= lambda p: p.port == 2379 or p.port == 2370 or p.port == 2380)
+class etcdRemoteAccess(Hunter):
+    """etcd Remote Access
+    Checks for availability of etcd, version, read access, write access
+    """
+    #TODO:
+    #db_keys_write_access: Convert that curl command to a uri: curl http://127.0.0.1:2379/v2/keys/message -XPUT -d value="Hello world"
+    #If we've got a read access-> check if data is encryption.
+    #Read Liz's book & etcd's rest api and check if I've missed important commands to check
+    #Do we need to add a auth check and remote connection?->>>
+    #->>>if we are able to get the version remotely it means there was no auth check and we were able to connect remotely but maybe we should display it?
+    #Add proper logs
+    def __init__(self, event):
+        self.event = event
+
+    def db_keys_disclosure(self):
+        logging.debug(self.event.host)
+        r = requests.get("https://{host}:{port}/v2/keys".format(host=self.event.host, port=2379))#decide which port to choose (maybe the host's port?)
+        if r.status_code == 200:
+            self.publish_event(etcdRemoteReadAccessEvent(secure=False))
+            return True
+        return False
+
+    def db_keys_write_access(self):
+        logging.debug(self.event.host)
+        r = requests.get("https://{host}:{port}/v2/keys".format(host=self.event.host, port=2379))#decide which port to choose (maybe the host's port?)
+        if r.status_code == 200:
+            self.publish_event(etcdRemoteWriteAccessEvent(secure=False))
+            return True
+        return False
+
+    def version_disclosure(self):
+        logging.debug(self.event.host)
+        r = requests.get("https://{host}:{port}/version".format(host=self.event.host, port=2379))  # decide which port to choose (maybe the host's port?)
+        if r.status_code == 200:
+            self.publish_event(etcdRemoteReadAccessEvent(secure=False))
+            return True
+        return False
+
+
+    def execute(self):
+       if (self.version_disclosure()):
+           self.db_keys_disclosure()
+           self.db_keys_write_access()