===================================================================                             CERT-Renater

                 Note d'Information No. 2023/VULN039

_____________________________________________________________________

DATE                : 01/02/2023

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Django versions prior to 4.1.6,
                                      4.0.9, 3.2.17.

====================================================================https://www.djangoproject.com/weblog/2023/feb/01/security-releases/
_____________________________________________________________________


Django security releases issued: 4.1.6, 4.0.9, and 3.2.17
Posted by Carlton Gibson & Mariusz Felisiak on février 1, 2023

In accordance with our security release policy, the Django team is
issuing Django 4.1.6, Django 4.0.9, and Django 3.2.17. These
releases addresses the security issue detailed below. We encourage
all users of Django to upgrade as soon as possible.


CVE-2023-23969: Potential denial-of-service via Accept-Language
headers

The parsed values of Accept-Language headers are cached in order to
avoid repetitive parsing. This leads to a potential denial-of-service
vector via excessive memory usage if large header values are sent.

In order to avoid this vulnerability, the Accept-Language header is
  now parsed up to a maximum length.

Thanks to Mithril 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
     On the 4.2 release branch
     On the 4.1 release branch
     On the 4.0 release branch
     On the 3.2 release branch

The following releases have been issued:

     Django 4.1.6 (download Django 4.1.6 | 4.1.6 checksums)
     Django 4.0.9 (download Django 4.0.9 | 4.0.9 checksums)
     Django 3.2.17 (download Django 3.2.17 | 3.2.17 checksums)

The PGP key ID used for this release is Mariusz Felisiak:
2EF56372BA48CD1B.


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 or the django-developers list. Please
see our security policies for further information.



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