A Django security update has been released for Ubuntu Linux 21.04, 20.10, 20.04 LTS, and 18.04 LTS.

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Ubuntu Security Notice USN-4932-1
May 04, 2021

python-django vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Django could be made to overwrite files.

Software Description:
- python-django: High-level Python web development framework

Details:

It was discovered that Django incorrectly handled certain
filenames. A remote attacker could possibly use this issue to create or
overwrite files in unexpected directories.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
python3-django 2:2.2.20-1ubuntu0.1

Ubuntu 20.10:
python3-django 2:2.2.16-1ubuntu0.4

Ubuntu 20.04 LTS:
python3-django 2:2.2.12-1ubuntu0.6

Ubuntu 18.04 LTS:
python-django 1:1.11.11-1ubuntu1.13
python3-django 1:1.11.11-1ubuntu1.13

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4932-1
CVE-2021-31542

Package Information:
  https://launchpad.net/ubuntu/+source/python-django/2:2.2.20-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/python-django/2:2.2.16-1ubuntu0.4
  https://launchpad.net/ubuntu/+source/python-django/2:2.2.12-1ubuntu0.6
  https://launchpad.net/ubuntu/+source/python-django/1:1.11.11-1ubuntu1.13