Date: Mon, 4 Sep 2023 13:05:31 +0200 From: Mariusz Felisiak <felisiak.mariusz@...il.com> To: oss-security@...ts.openwall.com Subject: Django: CVE-2023-41164: Potential denial of service vulnerability in django.utils.encoding.uri_to_iri() https://www.djangoproject.com/weblog/2023/sep/04/security-releases/ In accordance with `our security release policy <https://docs.djangoproject.com/en/dev/internals/security/>`_, the Django team is issuing `Django 4.2.5 <https://docs.djangoproject.com/en/dev/releases/4.2.5/>`_, `Django 4.1.11 <https://docs.djangoproject.com/en/dev/releases/4.1.11/>`_, and `Django 3.2.21 <https://docs.djangoproject.com/en/dev/releases/3.2.21/>`_. These releases addresses the security issue detailed below. We encourage all users of Django to upgrade as soon as possible. CVE-2023-41164: Potential denial of service vulnerability in ``django.utils.encoding.uri_to_iri()`` =================================================================================================== ``django.utils.encoding.uri_to_iri()`` was subject to potential denial of service attack via certain inputs with a very large number of Unicode characters. Thanks `MProgrammer <https://hackerone.com/mprogrammer>`_ for the report. This issue has severity "moderate" according to the Django security policy. Affected supported versions =========================== * Django main branch * Django 4.2 * Django 4.1 * Django 3.2 Resolution ========== Patches to resolve the issue have been applied to Django's main branch and the 4.2, 4.1, and 3.2 release branches. The patches may be obtained from the following changesets: * On the `main branch <https://github.com/django/django/commit/3f41d6d62929dfe53eda8109b3b836f26645bdce>`__ * On the `4.2 release branch <https://github.com/django/django/commit/9c51b4dcfa0cefcb48231f4d71cafa80821f87b9>`__ * On the `4.1 release branch <https://github.com/django/django/commit/ba00bc5ec6a7eff5e08be438f7b5b0e9574e8ff0>`__ * On the `3.2 release branch <https://github.com/django/django/commit/6f030b1149bd8fa4ba90452e77cb3edc095ce54e>`__ The following releases have been issued: * Django 4.2.5 (`download Django 4.2.5 <https://www.djangoproject.com/m/releases/4.2/Django-4.2.5.tar.gz>`_ | `4.2.5 checksums <https://www.djangoproject.com/m/pgp/Django-4.2.5.checksum.txt>`_) * Django 4.1.11 (`download Django 4.1.11 <https://www.djangoproject.com/m/releases/4.1/Django-4.1.11.tar.gz>`_ | `4.1.11 checksums <https://www.djangoproject.com/m/pgp/Django-4.1.11.checksum.txt>`_) * Django 3.2.21 (`download Django 3.2.21 <https://www.djangoproject.com/m/releases/3.2/Django-3.2.21.tar.gz>`_ | `3.2.21 checksums <https://www.djangoproject.com/m/pgp/Django-3.2.21.checksum.txt>`_) The PGP key ID used for this release is Mariusz Felisiak: `2EF56372BA48CD1B <https://github.com/felixxm.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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