Date: Tue, 1 Sep 2020 11:23:07 +0200 From: Carlton Gibson <carlton.gibson@...il.com> To: oss-security@...ts.openwall.com Subject: Django Security Releases for CVE-2020-24583 & CVE-2020-24584: permissions on intermediate-level directories on Python 3.7+ In accordance with `our security release policy <https://docs.djangoproject.com/en/dev/internals/security/>`_, the Django team is issuing `Django 3.1.1 <https://docs.djangoproject.com/en/dev/releases/3.1.1/>`_, `Django 3.0.10 <https://docs.djangoproject.com/en/dev/releases/3.0.10/>`_ and `Django 2.2.16 <https://docs.djangoproject.com/en/dev/releases/2.2.16/>`_. These releases address the security issue detailed below. We encourage all users of Django to upgrade as soon as possible. CVE-2020-24583: Incorrect permissions on intermediate-level directories on Python 3.7+ ====================================================================================== On Python 3.7+, ``FILE_UPLOAD_DIRECTORY_PERMISSIONS`` mode was not applied to intermediate-level directories created in the process of uploading files and to intermediate-level collected static directories when using the ``collectstatic`` management command. You should review and manually fix permissions on existing intermediate-level directories. CVE-2020-24584: Permission escalation in intermediate-level directories of the file system cache on Python 3.7+ =============================================================================================================== On Python 3.7+, the intermediate-level directories of the file system cache had the system's standard umask rather than ``0o077`` (no group or others permissions). Affected supported versions =========================== * Django master branch * Django 3.1 * Django 3.0 * Django 2.2 Resolution ========== Patches to resolve the issue have been applied to Django's master branch and the 3.1, 3.0, and 2.2 release branches. The patches may be obtained from the following changesets: CVE-2020-24583: * On the `master branch <https://github.com/django/django/commit/8d7271578d7b153435b40fe40236ebec43cbf1b9>`__ * On the `3.1 release branch <https://github.com/django/django/commit/934430d22aa5d90c2ba33495ff69a6a1d997d584>`__ * On the `3.0 release branch <https://github.com/django/django/commit/08892bffd275c79ee1f8f67639eb170aaaf1181e>`__ * On the `2.2 release branch <https://github.com/django/django/commit/375657a71c889c588f723469bd868bd1d40c369f>`__ CVE-2020-24584: * On the `master branch <https://github.com/django/django/commit/1853724acaf17ed7414d54c7d2b5563a25025a71>`__ * On the `3.1 release branch <https://github.com/django/django/commit/2b099caa5923afa8cfb5f1e8c0d56b6e0e81915b>`__ * On the `3.0 release branch <https://github.com/django/django/commit/cdb367c92a0ba72ddc0cbd13ff42b0e6df709554>`__ * On the `2.2 release branch <https://github.com/django/django/commit/a3aebfdc8153dc230686b6d2454ccd32ed4c9e6f>`__ The following releases have been issued: * Django 3.1.1 (`download Django 3.1.1 <https://www.djangoproject.com/m/releases/3.1/Django-3.1.1.tar.gz>`_ | `3.1.1 checksums <https://www.djangoproject.com/m/pgp/Django-3.1.1.checksum.txt>`_) * Django 3.0.10 (`download Django 3.0.10 <https://www.djangoproject.com/m/releases/3.0/Django-3.0.10.tar.gz>`_ | `3.0.10 checksums <https://www.djangoproject.com/m/pgp/Django-3.0.10.checksum.txt>`_) * Django 2.2.16 (`download Django 2.2.16 <https://www.djangoproject.com/m/releases/2.2/Django-2.2.16.tar.gz>`_ | `2.2.16 checksums <https://www.djangoproject.com/m/pgp/Django-2.2.16.checksum.txt>`_) The PGP key ID used for these releases is Carlton Gibson: E17DF5C82B4F9D00. 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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