django-filter is a generic system for filtering Django QuerySets based on user selections. In django-filter before version 2.4.0, automatically generated `NumberFilter` instances, whose value was later converted to an integer, were subject to potential DoS from maliciously input using exponential format with sufficiently large exponents. Version 2.4.0+ applies a `MaxValueValidator` with a a default `limit_value` of 1e50 to the form field used by `NumberFilter` instances. In addition, `NumberFilter` implements the new `get_max_validator()` which should return a configured validator instance to customise the limit, or else `None` to disable the additional validation. Users may manually apply an equivalent validator if they are not able to upgrade.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15225
Reference (s):
- https://security.netapp.com/advisory/ntap-20210604-0010/
- https://github.com/carltongibson/django-filter/security/advisories/GHSA-x7gm-rfgv-w973
- URL: https://github.com/carltongibson/django-filter/security/advisories/GHSA-x7gm-rfgv-w973
- FEDORA:FEDORA-2021-1acbee2459
- URL: https://lists.fedoraproject.org/archives/list/[email protected]/message/FAT2ZAEF6DM3VFSOHKB7X3ASSHGQHJAK/