Django security releases issued: 5.0.7 and 4.2.14

Posted by Natalia Bidart on July 9, 2024

In accordance with our security release policy, the Django team is issuing releases for Django 5.0.7 and Django 4.2.14. These releases address the security issues detailed below. We encourage all users of Django to upgrade as soon as possible.

CVE-2024-38875: Potential denial-of-service in django.utils.html.urlize()

urlize() and urlizetrunc() were subject to a potential denial-of-service attack via certain inputs with a very large number of brackets.

Thanks to Elias Myllymäki for the report.

This issue has severity "moderate" according to the Django security policy.

CVE-2024-39329: Username enumeration through timing difference for users with unusable passwords

The django.contrib.auth.backends.ModelBackend.authenticate() method allowed remote attackers to enumerate users via a timing attack involving login requests for users with unusable passwords.

This issue has severity "low" according to the Django security policy.

CVE-2024-39330: Potential directory-traversal in django.core.files.storage.Storage.save()

Derived classes of the django.core.files.storage.Storage base class which override generate_filename() without replicating the file path validations existing in the parent class, allowed for potential directory-traversal via certain inputs when calling save().

Built-in Storage sub-classes were not affected by this vulnerability.

Thanks to Josh Schneier for the report.

This issue has severity "low" according to the Django security policy.

CVE-2024-39614: Potential denial-of-service in django.utils.translation.get_supported_language_variant()

get_supported_language_variant() was subject to a potential denial-of-service attack when used with very long strings containing specific characters.

To mitigate this vulnerability, the language code provided to get_supported_language_variant() is now parsed up to a maximum length of 500 characters.

Thanks to MProgrammer for the report.

This issue has severity "moderate" according to the Django security policy.

Affected supported versions

Django main branch
Django 5.1 (currently at beta status)
Django 5.0
Django 4.2

Resolution

Patches to resolve the issue have been applied to Django's main, 5.1, 5.0, and 4.2 branches. The patches may be obtained from the following changesets.

CVE-2024-38875: Potential denial-of-service in django.utils.html.urlize()

On the main branch
On the 5.1 branch
On the 5.0 branch
On the 4.2 branch

CVE-2024-39329: Username enumeration through timing difference for users with unusable passwords

On the main branch
On the 5.1 branch
On the 5.0 branch
On the 4.2 branch

CVE-2024-39330: Potential directory-traversal in django.core.files.storage.Storage.save()

On the main branch
On the 5.1 branch
On the 5.0 branch
On the 4.2 branch

CVE-2024-39614: Potential denial-of-service in django.utils.translation.get_supported_language_variant()

On the main branch
On the 5.1 branch
On the 5.0 branch
On the 4.2 branch

The following releases have been issued

Django 5.0.7 (download Django 5.0.7 | 5.0.7 checksums)
Django 4.2.14 (download Django 4.2.14 | 4.2.14 checksums)

The PGP key ID used for this release is Natalia Bidart: 2EE82A8D9470983E

General notes regarding security reporting

As always, we ask that potential security issues be reported via private email to security@djangoproject.com, and not via Django's Trac instance, nor via the Django Forum, nor via the django-developers list. Please see our security policies for further information.