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GHSA-53qw-q765-4fww

Denial-of-service in Django

Source: GitHub Advisory Database (reviewed) High CVE-2021-45115

Packages

EcosystemPackageAffectedFixed in
PyPI Django >= 2.2a1, < 2.2.26 2.2.26
PyPI Django >= 3.2a1, < 3.2.11 3.2.11
PyPI Django >= 4.0a1, < 4.0.1 4.0.1

Details

As written in the advisory (Markdown source, shown as plain text).

An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. `UserAttributeSimilarityValidator` incurred significant overhead in evaluating a submitted password that was artificially large in relation to the comparison values. In a situation where access to user registration was unrestricted, this provided a potential vector for a denial-of-service attack.

References

External links from the advisory. They lead to third-party sites.