Changelog
python-django (2:4.0.1-1) experimental; urgency=medium
* New upstream security release:
- CVE-2021-45115: Denial-of-service possibility in
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.
- CVE-2021-45116: Potential information disclosure in 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.
- CVE-2021-45452: Potential directory-traversal via Storage.save()
Storage.save() allowed directory-traversal if directly passed suitably
crafted file names.
See <https://www.djangoproject.com/weblog/2022/jan/04/security-releases/>
for more information. (Closes: #1003113)
-- Chris Lamb <email address hidden> Tue, 04 Jan 2022 12:03:13 +0000
