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51 lines
2.2 KiB
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51 lines
2.2 KiB
Plaintext
==========================
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Django 1.1.3 release notes
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==========================
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Welcome to Django 1.1.3!
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This is the third "bugfix" release in the Django 1.1 series,
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improving the stability and performance of the Django 1.1 codebase.
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With one exception, Django 1.1.3 maintains backwards compatibility
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with Django 1.1.2. It also contains a number of fixes and other
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improvements. Django 1.1.2 is a recommended upgrade for any
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development or deployment currently using or targeting Django 1.1.
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For full details on the new features, backwards incompatibilities, and
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deprecated features in the 1.1 branch, see the :doc:`/releases/1.1`.
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Backwards incompatible changes
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==============================
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Restricted filters in admin interface
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-------------------------------------
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The Django administrative interface, django.contrib.admin, supports
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filtering of displayed lists of objects by fields on the corresponding
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models, including across database-level relationships. This is
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implemented by passing lookup arguments in the querystring portion of
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the URL, and options on the ModelAdmin class allow developers to
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specify particular fields or relationships which will generate
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automatic links for filtering.
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One historically-undocumented and -unofficially-supported feature has
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been the ability for a user with sufficient knowledge of a model's
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structure and the format of these lookup arguments to invent useful
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new filters on the fly by manipulating the querystring.
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However, it has been demonstrated that this can be abused to gain
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access to information outside of an admin user's permissions; for
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example, an attacker with access to the admin and sufficient knowledge
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of model structure and relations could construct query strings which --
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with repeated use of regular-expression lookups supported by the
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Django database API -- expose sensitive information such as users'
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password hashes.
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To remedy this, django.contrib.admin will now validate that
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querystring lookup arguments either specify only fields on the model
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being viewed, or cross relations which have been explicitly
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whitelisted by the application developer using the pre-existing
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mechanism mentioned above. This is backwards-incompatible for any
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users relying on the prior ability to insert arbitrary lookups.
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