add django variables exposure template

exposures/configs/django-vars.yaml

@@ -0,0 +1,42 @@
+id: django-vars
+
+info:
+  name: Exposed django variables
+  author: nobody
+  severity: low
+  reference:
+    - https://docs.djangoproject.com/en/dev/ref/settings/#allowed-hosts
+  tags: config,exposure
+
+requests:
+  - method: GET
+    path:
+      - "{{BaseURL}}"
+
+    matchers-condition: and
+    matchers:
+      - type: word
+        words:
+          - 'seeing this error because you have <code>DEBUG = True</code>'
+          - 'SuspiciousOperation'
+          - 'DisallowedHost'
+          - 'DisallowedModelAdminLookup'
+          - 'DisallowedModelAdminToField'
+          - 'DisallowedRedirect'
+          - 'InvalidSessionKey'
+          - 'RequestDataTooBig'
+          - 'SuspiciousFileOperation'
+          - 'SuspiciousMultipartForm'
+          - 'SuspiciousSession'
+          - 'TooManyFieldsSent'
+          - 'PermissionDenied'
+        condition: or
+
+      - type: status
+        status:
+          - 400
+
+      - type: word
+        part: header
+        words:
+          - "text/html"