CVE-2023-43665

Description

In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-43665
• https://github.com/django/django/commit/be9c27c4d18c2e6a5be8af4e53c0797440794473
• https://github.com/django/django/commit/c7b7024742250414e426ad49fb80db943e7ba4e8
• https://github.com/django/django/commit/ccdade1a0262537868d7ca64374de3d957ca50c5
• https://docs.djangoproject.com/en/4.2/releases/security
• https://github.com/django/django
• https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2023-226.yaml
• https://groups.google.com/forum/#!forum/django-announce
• https://groups.google.com/forum/#%21forum/django-announce
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D
• https://security.netapp.com/advisory/ntap-20231221-0001
• https://www.djangoproject.com/weblog/2023/oct/04/security-releases
• http://www.openwall.com/lists/oss-security/2024/03/04/1
• https://www.djangoproject.com/weblog/2023/oct/04/security-releases/
• https://docs.djangoproject.com/en/4.2/releases/security/
• https://www.suse.com/security/cve/CVE-2023-43665.html
• https://security-tracker.debian.org/tracker/CVE-2023-43665