CVE-2023-46695
HIGH7.5EPSS 3.6%Django potential denial of service vulnerability in UsernameField on Windows
Published: 11/2/2023Modified: 4/3/2025
Description
An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
Affected packages (3)
- Bitnami/django>= 3.2.0, < 3.2.23, >= 4.1.0, < 4.1.13, >= 4.2.0, < 4.2.7
- PyPI/django>= 3.2a1, < 3.2.23
- PyPI/django>= 3.2, < 3.2.23, >= 4.1, < 4.1.13, >= 4.2, < 4.2.7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (14)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-46695
- ADVISORYhttps://www.djangoproject.com/weblog/2023/nov/01/security-releases/
- PATCHhttps://github.com/django/django
- WEBhttps://docs.djangoproject.com/en/4.2/releases/security
- WEBhttps://docs.djangoproject.com/en/4.2/releases/security/
- WEBhttps://github.com/django/django/commit/048a9ebb6ea468426cb4e57c71572cbbd975517f
- WEBhttps://github.com/django/django/commit/4965bfdde2e5a5c883685019e57d123a3368a75e
- WEBhttps://github.com/django/django/commit/f9a7fb8466a7ba4857eaf930099b5258f3eafb2b
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2023-222.yaml
- WEBhttps://groups.google.com/forum/#%21forum/django-announce
- WEBhttps://groups.google.com/forum/#!forum/django-announce
- WEBhttps://security.netapp.com/advisory/ntap-20231214-0001
- WEBhttps://security.netapp.com/advisory/ntap-20231214-0001/
- WEBhttps://www.djangoproject.com/weblog/2023/nov/01/security-releases