Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Djangoproject | Django | >= 2.2, < 2.2.26 |
| Fedoraproject | Fedora | 35 |
References
- https://docs.djangoproject.com/en/4.0/releases/security/PatchVendor Advisory
- https://groups.google.com/forum/#%21forum/django-announce
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20220121-0005/Third Party Advisory
- https://www.djangoproject.com/weblog/2022/jan/04/security-releases/PatchVendor Advisory
- https://docs.djangoproject.com/en/4.0/releases/security/PatchVendor Advisory
- https://groups.google.com/forum/#%21forum/django-announce
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20220121-0005/Third Party Advisory
- https://www.djangoproject.com/weblog/2022/jan/04/security-releases/PatchVendor Advisory
FAQ
What is CVE-2021-45115?
CVE-2021-45115 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2021-45115?
CVE-2021-45115 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-45115?
Check the references section above for vendor advisories and patch information. Affected products include: Djangoproject Django, Fedoraproject Fedora.