Vulnerability advisory

GHSA-qmf9-6jqf-j8fq

Django potential denial of service vulnerability in UsernameField on Windows

Published Nov 2, 2023Updated Sep 20, 2024OSV record ↗

Also known as BIT-django-2023-46695CVE-2023-46695PYSEC-2023-222

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected versions

django PyPI

All django advisories →

Affected	Fixed in
`3.2a1` to before 3.2.23	`3.2.23`Advisories →
Also listed as affected (26) `3.2` `3.2.1` `3.2.10` `3.2.11` `3.2.12` `3.2.13` `3.2.14` `3.2.15` `3.2.16` `3.2.17` `3.2.18` `3.2.19` `3.2.2` `3.2.20` `3.2.21` `3.2.22` `3.2.3` `3.2.4` `3.2.5` `3.2.6` `3.2.7` `3.2.8` `3.2.9` `3.2a1` `3.2b1` `3.2rc1`
`4.1a1` to before 4.1.13	`4.1.13`Advisories →
Also listed as affected (16) `4.1` `4.1.1` `4.1.10` `4.1.11` `4.1.12` `4.1.2` `4.1.3` `4.1.4` `4.1.5` `4.1.6` `4.1.7` `4.1.8` `4.1.9` `4.1a1` `4.1b1` `4.1rc1`
`4.2a1` to before 4.2.7	`4.2.7`Advisories →
Also listed as affected (10) `4.2` `4.2.1` `4.2.2` `4.2.3` `4.2.4` `4.2.5` `4.2.6` `4.2a1` `4.2b1` `4.2rc1`

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.

GHSA-qmf9-6jqf-j8fq

Affected versions

django PyPI

Description

References