[1.8.x] Fixed #24625 -- Prevented arbitrary file inclusion in admindocs

Thanks Tim Graham for the review.

Backport of 09595b4fc6 from master

django/contrib/admindocs/utils.py

@@ -67,7 +67,9 @@ def parse_rst(text, default_reference_context, thing_being_parsed=None):
         'doctitle_xform': True,
         'inital_header_level': 3,
         "default_reference_context": default_reference_context,
-        "link_base": reverse('django-admindocs-docroot').rstrip('/')
+        "link_base": reverse('django-admindocs-docroot').rstrip('/'),
+        'raw_enabled': False,
+        'file_insertion_enabled': False,
     }
     if thing_being_parsed:
         thing_being_parsed = force_bytes("<%s>" % thing_being_parsed)

docs/releases/1.8.1.txt

@@ -35,3 +35,6 @@ Bugfixes
 * Fixed a regression in the model detail view of
   :mod:`~django.contrib.admindocs` when a model has a reverse foreign key
   relation (:ticket:`24624`).
+
+* Prevented arbitrary file inclusions in :mod:`~django.contrib.admindocs`
+  (:ticket:`24625`).

tests/admin_docs/models.py

@@ -29,6 +29,12 @@ class Person(models.Model):
         Field storing :model:`myapp.Company` where the person works.
 
     (DESCRIPTION)
+
+    .. raw:: html
+        :file: admin_docs/evilfile.txt
+
+    .. include:: admin_docs/evilfile.txt
+
     """
     first_name = models.CharField(max_length=200, help_text="The person's first name")
     last_name = models.CharField(max_length=200, help_text="The person's last name")

tests/admin_docs/tests.py

@@ -280,6 +280,12 @@ class TestModelDetailView(AdminDocsTestCase):
             "all related %s objects" % (link % ("admin_docs.group", "admin_docs.Group"))
         )
 
+        # "raw" and "include" directives are disabled
+        self.assertContains(self.response, '<p>&quot;raw&quot; directive disabled.</p>',)
+        self.assertContains(self.response, '.. raw:: html\n    :file: admin_docs/evilfile.txt')
+        self.assertContains(self.response, '<p>&quot;include&quot; directive disabled.</p>',)
+        self.assertContains(self.response, '.. include:: admin_docs/evilfile.txt')
+
     def test_model_with_many_to_one(self):
         link = '<a class="reference external" href="/admindocs/models/%s/">%s</a>'
         response = self.client.get(