January 4, 2022
Django 4.0.1 fixes one security issue with severity "medium", two security issues with severity "low", and several bugs in 4.0.
UserAttributeSimilarityValidator¶UserAttributeSimilarityValidator incurred significant overhead
evaluating submitted password that were artificially large in relative to the
comparison values. On the assumption that access to user registration was
unrestricted this provided a potential vector for a denial-of-service attack.
In order to mitigate this issue, relatively long values are now ignored by
UserAttributeSimilarityValidator.
This issue has severity "medium" according to the Django security policy.
dictsort template filter¶Due to leveraging the Django Template Language's variable resolution logic, the
dictsort template filter was potentially vulnerable to information
disclosure or unintended method calls, if passed a suitably crafted key.
In order to avoid this possibility, dictsort now works with a restricted
resolution logic, that will not call methods, nor allow indexing on
dictionaries.
As a reminder, all untrusted user input should be validated before use.
This issue has severity "low" according to the Django security policy.
Storage.save()¶Storage.save() allowed directory-traversal if directly passed suitably
crafted file names.
This issue has severity "low" according to the Django security policy.
assertFormsetError() on a formset named form (#33346).RedisCache backend (#33361).HttpRequest in django.views.decorators.cache.cache_control() and
never_cache() decorators (#33350).auth.User
(#33366).Polygon that caused a crash on some
platforms (reported on macOS based on the ARM64 architecture)
(#32600).5月 12, 2023