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57 lines
2.3 KiB
Plaintext
57 lines
2.3 KiB
Plaintext
==========================
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Django 2.0.3 release notes
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==========================
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*March 6, 2018*
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Django 2.0.3 fixes two security issues and several bugs in 2.0.2. Also, the
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latest string translations from Transifex are incorporated.
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CVE-2018-7536: Denial-of-service possibility in ``urlize`` and ``urlizetrunc`` template filters
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===============================================================================================
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The ``django.utils.html.urlize()`` function was extremely slow to evaluate
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certain inputs due to catastrophic backtracking vulnerabilities in two regular
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expressions. The ``urlize()`` function is used to implement the ``urlize`` and
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``urlizetrunc`` template filters, which were thus vulnerable.
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The problematic regular expressions are replaced with parsing logic that
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behaves similarly.
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CVE-2018-7537: Denial-of-service possibility in ``truncatechars_html`` and ``truncatewords_html`` template filters
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==================================================================================================================
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If ``django.utils.text.Truncator``'s ``chars()`` and ``words()`` methods were
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passed the ``html=True`` argument, they were extremely slow to evaluate certain
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inputs due to a catastrophic backtracking vulnerability in a regular
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expression. The ``chars()`` and ``words()`` methods are used to implement the
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``truncatechars_html`` and ``truncatewords_html`` template filters, which were
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thus vulnerable.
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The backtracking problem in the regular expression is fixed.
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Bugfixes
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========
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* Fixed a regression that caused sliced ``QuerySet.distinct().order_by()``
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followed by ``count()`` to crash (:ticket:`29108`).
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* Prioritized the datetime and time input formats without ``%f`` for the Thai
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locale to fix the admin time picker widget displaying "undefined"
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(:ticket:`29109`).
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* Fixed crash with ``QuerySet.order_by(Exists(...))`` (:ticket:`29118`).
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* Made ``Q.deconstruct()`` deterministic with multiple keyword arguments
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(:ticket:`29125`). You may need to modify ``Q``'s in existing migrations, or
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accept an autogenerated migration.
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* Fixed a regression where a ``When()`` expression with a list argument crashes
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(:ticket:`29166`).
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* Fixed crash when using a ``Window()`` expression in a subquery
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(:ticket:`29172`).
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* Fixed ``AbstractBaseUser.normalize_username()`` crash if the ``username``
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argument isn't a string (:ticket:`29176`).
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