Date: Tue, 14 Feb 2023 09:40:43 +0100 From: Carlton Gibson <carlton.gibson@...il.com> To: oss-security@...ts.openwall.com Subject: Django - CVE-2023-24580: Potential denial-of-service vulnerability in file uploads Django security releases issued: 4.1.7, 4.0.10, and 3.2.18 Details are available on the Django project weblog: https://www.djangoproject.com/weblog/2023/feb/14/security-releases/ In accordance with `our security release policy <https://docs.djangoproject.com/en/dev/internals/security/>`_, the Django team is issuing `Django 4.1.7 <https://docs.djangoproject.com/en/dev/releases/4.1.7/>`_, `Django 4.0.10 <https://docs.djangoproject.com/en/dev/releases/4.0.10/>`_, and `Django 3.2.18 <https://docs.djangoproject.com/en/dev/releases/3.2.18/>`_. These releases addresses the security issue detailed below. We encourage all users of Django to upgrade as soon as possible. CVE-2023-24580: Potential denial-of-service vulnerability in file uploads ========================================================================= Passing certain inputs to multipart forms could result in too many open files or memory exhaustion, and provided a potential vector for a denial-of-service attack. The number of files parts parsed is now limited via the new ``DATA_UPLOAD_MAX_NUMBER_FILES`` setting. Thanks to Jakob Ackermann for the report. This issue has severity "moderate" according to the Django security policy. Affected supported versions =========================== * Django main branch * Django 4.2 (currently at pre-release alpha status) * Django 4.1 * Django 4.0 * Django 3.2 Resolution ========== Patches to resolve the issue have been applied to Django's main branch and the 4.2, 4.1, 4.0, and 3.2 release branches. The patches may be obtained from the following changesets: * On the `main branch < https://github.com/django/django/commit/85ac33591c393f1480d4f23b4daff40119cb6410 >`__ * On the `4.2 release branch < https://github.com/django/django/commit/7ac5ff37b822c14e5b6be99da7f618eb1fe06062 >`__ * On the `4.1 release branch < https://github.com/django/django/commit/628b33a854a9c68ec8a0c51f382f304a0044ec92 >`__ * On the `4.0 release branch < https://github.com/django/django/commit/83f1ea83e4553e211c1c5a0dfc197b66d4e50432 >`__ * On the `3.2 release branch < https://github.com/django/django/commit/a665ed5179f5bbd3db95ce67286d0192eff041d8 >`__ The following releases have been issued: * Django 4.1.7 (`download Django 4.1.7 < https://www.djangoproject.com/m/releases/4.1/Django-4.1.7.tar.gz>`_ | `4.1.7 checksums < https://www.djangoproject.com/m/pgp/Django-4.1.7.checksum.txt>`_) * Django 4.0.10 (`download Django 4.0.10 < https://www.djangoproject.com/m/releases/4.0/Django-4.0.10.tar.gz>`_ | `4.0.10 checksums < https://www.djangoproject.com/m/pgp/Django-4.0.10.checksum.txt>`_) * Django 3.2.18 (`download Django 3.2.18 < https://www.djangoproject.com/m/releases/3.2/Django-3.2.18.tar.gz>`_ | `3.2.18 checksums < https://www.djangoproject.com/m/pgp/Django-3.2.18.checksum.txt>`_) The PGP key ID used for this release is Carlton Gibson: `E17DF5C82B4F9D00 < https://github.com/carltongibson.gpg>`_ General notes regarding security reporting ========================================== As always, we ask that potential security issues be reported via private email to ``security@...ngoproject.com``, and not via Django's Trac instance or the django-developers list. Please see `our security policies <https://www.djangoproject.com/security/>`_ for further information.
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