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                             CERT-Renater

                 Note d'Information No. 2021/VULN057
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DATE                : 01/02/2021

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S):  Systems running Django versions prior to 3.1.6,
                                      3.0.12, 2.2.18.

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https://www.djangoproject.com/weblog/2021/feb/01/security-releases/
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Django security releases issued: 3.1.6, 3.0.12, and 2.2.18
Posted by Mariusz Felisiak on février 1, 2021

In accordance with our security release policy, the Django team is
issuing Django 3.1.6, Django 3.0.12 and Django 2.2.18. These releases
address the security issue with severity "low" detailed below. We
encourage all users of Django to upgrade as soon as possible.


CVE-2021-3281: Potential directory-traversal via archive.extract()

The django.utils.archive.extract() function, used by startapp --template
and startproject --template, allowed directory-traversal via an archive
with absolute paths or relative paths with dot segments.

Thank you to Wang Baohua for the report.


Affected supported versions

    Django master branch
    Django 3.2 (currently at alpha status)
    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 3.2, 3.1, 3.0, and 2.2 release branches. The patches may be
obtained from the following changesets:

    On the master branch
    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 3.1.6 (download Django 3.1.6 | 3.1.6 checksums)
    Django 3.0.12 (download Django 3.0.12 | 3.0.12 checksums)
    Django 2.2.18 (download Django 2.2.18 | 2.2.18 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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+ 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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