GHSA-x7gm-rfgv-w973

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GHSA-x7gm-rfgv-w973

Summary: Potential DoS with NumberFilter conversion to integer values.

Details: ### Impact 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. ### Patches 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. ### Workarounds Users may manually apply an equivalent validator if they are not able to upgrade. ### For more information If you have any questions or comments about this advisory: * Open an issue in [the django-filter repo](https://github.com/carltongibson/django-filter) Thanks to Marcin Waraksa for the report.

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/[email protected]/message/DPHENTRHRAYFXYPPBT7JRHZRWILRY44S, https://lists.fedoraproject.org/archives/list/[email protected]/message/FAT2ZAEF6DM3VFSOHKB7X3ASSHGQHJAK, https://lists.fedoraproject.org/archives/list/[email protected]/message/SVJ7AYU6FUSU3F653YCGW5LFD3IULRSX, https://pypi.org/project/django-filter, https://security.netapp.com/advisory/ntap-20210604-0010