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                             CERT-Renater

                 Note d'Information No. 2021/VULN113
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DATE                : 23/02/2021

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S):  Systems running Django versions prior to 3.1.7,
                                   3.0.13, 2.2.19.

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https://www.djangoproject.com/weblog/2021/feb/19/security-releases/
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Django security releases issued: 3.1.7, 3.0.13 and 2.2.19
Posted by Carlton Gibson on février 19, 2021

In accordance with our security release policy, the Django team is
issuing Django 3.1.7, Django 3.0.13, and Django 2.2.19. These release
addresses the security issue detailed below. We encourage all users of
Django to upgrade as soon as possible.


CVE-2021-23336: Web cache poisoning via
django.utils.http.limited_parse_qsl()

Django contains a copy of urllib.parse.parse_qsl() which was added to
backport some security fixes. A further security fix has been issued
recently such that parse_qsl() no longer allows using ; as a query
parameter separator by default. Django now includes this fix. See
bpo-42967 for further details.

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


Affected supported versions

    Django 3.2 (currently at beta status)
    Django 3.1
    Django 3.0
    Django 2.2


Resolution

Patches to resolve the issue have been applied to the 3.2, 3.1, 3.0, and
2.2 release branches. The patches may be obtained from the following
changesets:

    On the 3.2 release branch
    On the 3.1 release branch
    On the 3.0 release branch
    On the 2.2 release branch

The following releases have been issued:

    Django 3.1.7 (download Django 3.1.7 | 3.1.7 checksums)
    Django 3.0.13 (download Django 3.0.13 | 3.0.13 checksums)
    Django 2.2.19 (download Django 2.2.19 | 2.2.19 checksums)

The PGP key ID used for these releases is Carlton Gibson: E17DF5C82B4F9D00.

Django 3.2 beta 1 will be released in a separate blog post later today.


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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+ CERT-RENATER       |    tel : 01-53-94-20-44          +
+ 23/25 Rue Daviel   |    fax : 01-53-94-20-41          +
+ 75013 Paris        |    email:cert@support.renater.fr +
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