Vulnerability · Published Apr 29, 2021 · Assigned by GitHub_M
CVE-2020-15225Denial of Service vulnerability in django-filter
High 7.5
In plain English
A high-severity security flaw in django-filter from carltongibson. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | django-filter | 2.4.0-1 | DEBIAN-CVE-2020-15225 |
| Debian:13 | django-filter | 2.4.0-1 | DEBIAN-CVE-2020-15225 |
| Debian:14 | django-filter | 2.4.0-1 | DEBIAN-CVE-2020-15225 |
| PyPI | django-filter | 2.4.0 | GHSA-x7gm-rfgv-w973 |
| PyPI | django-filter | 2.4.0 | PYSEC-2021-64 |
| Ubuntu:22.04:LTS | django-filter | no fix listed | UBUNTU-CVE-2020-15225 |
| Ubuntu:24.04:LTS | django-filter | no fix listed | UBUNTU-CVE-2020-15225 |
| Ubuntu:25.10 | django-filter | no fix listed | UBUNTU-CVE-2020-15225 |
| Ubuntu:26.04:LTS | django-filter | no fix listed | UBUNTU-CVE-2020-15225 |
| Ubuntu:26.10 | django-filter | no fix listed | UBUNTU-CVE-2020-15225 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| carltongibson | django-filter | < 2.4.0 |
Weakness: CWE-681 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/carltongibson/django-filter/security/advisories/GHSA-x7gm-rfgv-w973
- https://github.com/carltongibson/django-filter/commit/340cf7a23a2b3dcd7183f6a0d6c383e85b130d2b
- https://github.com/carltongibson/django-filter/releases/tag/2.4.0
- https://pypi.org/project/django-filter/
- https://security.netapp.com/advisory/ntap-20210604-0010/
- FEDORA-2021-f213fea441 vendor-advisory
- FEDORA-2021-1acbee2459 vendor-advisory
- FEDORA-2023-4dee6d0a76 vendor-advisory