CVE-2020-15225
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.4.0-1 |
| sid | Fixed | 2.4.0-1 |
| forky | Fixed | 2.4.0-1 |
| bullseye | Fixed | 2.4.0-1 |
| bookworm | Fixed | 2.4.0-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | django-filter | <2.4.0 | 2.4.0 |
| PyPI | django-filter | <340cf7a23a2b3dcd7183f6a0d6c383e85b130d2b||<2.4.0 | 340cf7a23a2b3dcd7183f6a0d6c383e85b130d2b |
References
- https://github.com/carltongibson/django-filter/security/advisories/GHSA-x7gm-rfgv-w973
- https://nvd.nist.gov/vuln/detail/CVE-2020-15225
- https://github.com/carltongibson/django-filter/commit/340cf7a23a2b3dcd7183f6a0d6c383e85b130d2b
- https://github.com/carltongibson/django-filter
- https://github.com/carltongibson/django-filter/releases/tag/2.4.0
- https://github.com/pypa/advisory-database/tree/main/vulns/django-filter/PYSEC-2021-64.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DPHENTRHRAYFXYPPBT7JRHZRWILRY44S
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FAT2ZAEF6DM3VFSOHKB7X3ASSHGQHJAK
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SVJ7AYU6FUSU3F653YCGW5LFD3IULRSX
- https://pypi.org/project/django-filter
- https://security.netapp.com/advisory/ntap-20210604-0010
- https://pypi.org/project/django-filter/
- https://security-tracker.debian.org/tracker/CVE-2020-15225
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.