CVE-2020-15225
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.
Does this matter?
Lower severity and a low EPSS score (1.80%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.80% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-681
- Affected
- django-filter project/django-filter · fedoraproject/fedora
- Source
- security-advisories@github.com
References
- https://github.com/carltongibson/django-filter/commit/340cf7a23a2b3dcd7183f6a0d6c383e85b130d2bPatch, Third Party Advisory
- https://github.com/carltongibson/django-filter/releases/tag/2.4.0Release Notes, Third Party Advisory
- https://github.com/carltongibson/django-filter/security/advisories/GHSA-x7gm-rfgv-w973Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPHENTRHRAYFXYPPBT7JRHZRWILRY44S/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAT2ZAEF6DM3VFSOHKB7X3ASSHGQHJAK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVJ7AYU6FUSU3F653YCGW5LFD3IULRSX/
- https://pypi.org/project/django-filter/Product, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210604-0010/Third Party Advisory
- https://github.com/carltongibson/django-filter/commit/340cf7a23a2b3dcd7183f6a0d6c383e85b130d2bPatch, Third Party Advisory
- https://github.com/carltongibson/django-filter/releases/tag/2.4.0Release Notes, Third Party Advisory
- https://github.com/carltongibson/django-filter/security/advisories/GHSA-x7gm-rfgv-w973Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPHENTRHRAYFXYPPBT7JRHZRWILRY44S/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAT2ZAEF6DM3VFSOHKB7X3ASSHGQHJAK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVJ7AYU6FUSU3F653YCGW5LFD3IULRSX/
- https://pypi.org/project/django-filter/Product, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210604-0010/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.