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django/docs/releases/3.2.2.txt

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Added stub release notes for Django 3.2.2.
2021-05-04 17:01:33 +08:00
==========================
Django 3.2.2 release notes
==========================
Fixed #32713, Fixed CVE-2021-32052 -- Prevented newlines and tabs from being accepted in URLValidator on Python 3.9.5+. In Python 3.9.5+ urllib.parse() automatically removes ASCII newlines and tabs from URLs [1, 2]. Unfortunately it created an issue in the URLValidator. URLValidator uses urllib.urlsplit() and urllib.urlunsplit() for creating a URL variant with Punycode which no longer contains newlines and tabs in Python 3.9.5+. As a consequence, the regular expression matched the URL (without unsafe characters) and the source value (with unsafe characters) was considered valid. [1] https://bugs.python.org/issue43882 and [2] https://github.com/python/cpython/commit/76cd81d60310d65d01f9d7b48a8985d8ab89c8b4
2021-05-06 14:45:23 +08:00
*May 6, 2021*
Added stub release notes for Django 3.2.2.
2021-05-04 17:01:33 +08:00
Fixed #32713, Fixed CVE-2021-32052 -- Prevented newlines and tabs from being accepted in URLValidator on Python 3.9.5+. In Python 3.9.5+ urllib.parse() automatically removes ASCII newlines and tabs from URLs [1, 2]. Unfortunately it created an issue in the URLValidator. URLValidator uses urllib.urlsplit() and urllib.urlunsplit() for creating a URL variant with Punycode which no longer contains newlines and tabs in Python 3.9.5+. As a consequence, the regular expression matched the URL (without unsafe characters) and the source value (with unsafe characters) was considered valid. [1] https://bugs.python.org/issue43882 and [2] https://github.com/python/cpython/commit/76cd81d60310d65d01f9d7b48a8985d8ab89c8b4
2021-05-06 14:45:23 +08:00
Django 3.2.2 fixes a security issue and a bug in 3.2.1.
CVE-2021-32052: Header injection possibility since ``URLValidator`` accepted newlines in input on Python 3.9.5+
===============================================================================================================
On Python 3.9.5+, :class:`~django.core.validators.URLValidator` didn't prohibit
newlines and tabs. If you used values with newlines in HTTP response, you could
suffer from header injection attacks. Django itself wasn't vulnerable because
:class:`~django.http.HttpResponse` prohibits newlines in HTTP headers.
Moreover, the ``URLField`` form field which uses ``URLValidator`` silently
removes newlines and tabs on Python 3.9.5+, so the possibility of newlines
entering your data only existed if you are using this validator outside of the
form fields.
This issue was introduced by the :bpo:`43882` fix.
Added stub release notes for Django 3.2.2.
2021-05-04 17:01:33 +08:00
Bugfixes
========
Fixed #32714 -- Prevented recreation of migration for Meta.ordering with OrderBy expressions. Regression in c8b659430556dca0b2fe27cf2ea0f8290dbafecd. Thanks Kevin Marsh for the report.
2021-05-05 05:49:46 +08:00
* Prevented, following a regression in Django 3.2.1, :djadmin:`makemigrations`
from generating infinite migrations for a model with ``Meta.ordering``
contained ``OrderBy`` expressions (:ticket:`32714`).