1. ==========================

  2. Django 3.2.4 release notes

  3. ==========================

  4. 

  5. *June 2, 2021*

  6. 

  7. Django 3.2.4 fixes two security issues and several bugs in 3.2.3.

  8. 

  9. CVE-2021-33203: Potential directory traversal via ``admindocs``

  10. ===============================================================

  11. 

  12. Staff members could use the :mod:`~django.contrib.admindocs`

  13. ``TemplateDetailView`` view to check the existence of arbitrary files.

  14. Additionally, if (and only if) the default admindocs templates have been

  15. customized by the developers to also expose the file contents, then not only

  16. the existence but also the file contents would have been exposed.

  17. 

  18. As a mitigation, path sanitation is now applied and only files within the

  19. template root directories can be loaded.

  20. 

  21. CVE-2021-33571: Possible indeterminate SSRF, RFI, and LFI attacks since validators accepted leading zeros in IPv4 addresses

  22. ===========================================================================================================================

  23. 

  24. :class:`~django.core.validators.URLValidator`,

  25. :func:`~django.core.validators.validate_ipv4_address`, and

  26. :func:`~django.core.validators.validate_ipv46_address` didn't prohibit leading

  27. zeros in octal literals. If you used such values you could suffer from

  28. indeterminate SSRF, RFI, and LFI attacks.

  29. 

  30. :func:`~django.core.validators.validate_ipv4_address` and

  31. :func:`~django.core.validators.validate_ipv46_address` validators were not

  32. affected on Python 3.9.5+.

  33. 

  34. Bugfixes

  35. ========

  36. 

  37. * Fixed a bug in Django 3.2 where a final catch-all view in the admin didn't

  38.   respect the server-provided value of ``SCRIPT_NAME`` when redirecting

  39.   unauthenticated users to the login page (:ticket:`32754`).

  40. 

  41. * Fixed a bug in Django 3.2 where a system check would crash on an abstract

  42.   model (:ticket:`32733`).

  43. 

  44. * Prevented unnecessary initialization of unused caches following a regression

  45.   in Django 3.2 (:ticket:`32747`).

  46. 

  47. * Fixed a crash in Django 3.2 that could occur when running ``mod_wsgi`` with

  48.   the recommended settings while the Windows ``colorama`` library was installed

  49.   (:ticket:`32740`).

  50. 

  51. * Fixed a bug in Django 3.2 that would trigger the auto-reloader for template

  52.   changes when directory paths were specified with strings (:ticket:`32744`).

  53. 

  54. * Fixed a regression in Django 3.2 that caused a crash of auto-reloader with

  55.   ``AttributeError``, e.g. inside a ``Conda`` environment (:ticket:`32783`).

  56. 

  57. * Fixed a regression in Django 3.2 that caused a loss of precision for

  58.   operations with ``DecimalField`` on MySQL (:ticket:`32793`).
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