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
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3:4.2.6-1 |
| sid | Fixed | 3:4.2.6-1 |
| forky | Fixed | 3:4.2.6-1 |
| bullseye | Fixed | 2:2.2.28-1~deb11u7 |
| bookworm | Fixed | 3:3.2.25-0+deb12u1 |
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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.