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[1.4.x] Update 1.4.4 release notes for all security fixes.

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commit 62d5338bf208aea3e10b020d0cf65bd93dcc253f 1 parent 0cc350a
@carljm carljm authored
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  1. +51 −1 docs/releases/1.4.4.txt
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52 docs/releases/1.4.4.txt
@@ -4,8 +4,13 @@ Django 1.4.4 release notes
*February 19, 2013*
+Django 1.4.4 fixes four security issues present in previous Django releases in
+the 1.4 series, as well as several other bugs and numerous documentation
+improvements.
+
This is the fourth bugfix/security release in the Django 1.4 series.
+
Host header poisoning
---------------------
@@ -24,16 +29,61 @@ Host header not matching an entry in this list will raise
``SuspiciousOperation`` if ``request.get_host()`` is called. For full details
see the documentation for the :setting:`ALLOWED_HOSTS` setting.
-The default value for this setting in Django 1.4.4 is `['*']` (matching any
+The default value for this setting in Django 1.4.4 is ``['*']`` (matching any
host), for backwards-compatibility, but we strongly encourage all sites to set
a more restrictive value.
This host validation is disabled when ``DEBUG`` is ``True`` or when running tests.
+XML deserialization
+-------------------
+
+The XML parser in the Python standard library is vulnerable to a number of
+denial-of-service attacks via external entities and entity expansion. Django
+uses this parser for deserializing XML-formatted database fixtures. This
+deserializer is not intended for use with untrusted data, but in order to err
+on the side of safety in Django 1.4.4 the XML deserializer refuses to parse an
+XML document with a DTD (DOCTYPE definition), which closes off these attack
+avenues.
+
+These issues in the Python standard library are CVE-2013-1664 and
+CVE-2013-1665. More information available `from the Python security team`_.
+
+Django's XML serializer does not create documents with a DTD, so this should
+not cause any issues with the typical round-trip from ``dumpdata`` to
+``loaddata``, but if you feed your own XML documents to the ``loaddata``
+management command, you will need to ensure they do not contain a DTD.
+
+.. _from the Python security team: http://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html
+
+
+Formset memory exhaustion
+-------------------------
+
+Previous versions of Django did not validate or limit the form-count data
+provided by the client in a formset's management form, making it possible to
+exhaust a server's available memory by forcing it to create very large numbers
+of forms.
+
+In Django 1.4.4, all formsets have a strictly-enforced maximum number of forms
+(1000 by default, though it can be set higher via the ``max_num`` formset
+factory argument).
+
+
+Admin history view information leakage
+--------------------------------------
+
+In previous versions of Django, an admin user without change permission on a
+model could still view the unicode representation of instances via their admin
+history log. Django 1.4.4 now limits the admin history log view for an object
+to users with change permission for that model.
+
+
Other bugfixes and changes
==========================
+* Prevented transaction state from leaking from one request to the next (#19707).
* Changed a SQL command syntax to be MySQL 4 compatible (#19702).
* Added backwards-compatibility with old unsalted MD5 passwords (#18144).
* Numerous documentation improvements and fixes.
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