An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
| Link | Tags |
|---|---|
| https://groups.google.com/forum/#%21forum/django-announce | permissions required |
| https://docs.djangoproject.com/en/4.2/releases/security/ | patch |
| https://www.djangoproject.com/weblog/2023/nov/01/security-releases/ | patch vendor advisory |
| https://security.netapp.com/advisory/ntap-20231214-0001/ |