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

  2. Django 2.2.24 release notes

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

  4. 

  5. *June 2, 2021*

  6. 

  7. Django 2.2.24 fixes two security issues in 2.2.23.

  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+.
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