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Ubuntu Security Notice USN-7501-2
May 07, 2025

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

- Ubuntu 18.04 LTS

Summary:

Django could be made to crash if it received specially crafted network
traffic.

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

Details:

USN-7501-1 fixed a vulnerability in Django. This update provides
the corresponding update for Ubuntu 18.04 LTS.

Original advisory details:

 Elias Myllymäki discovered that Django incorrectly handled stripping large
 sequences of incomplete HTML tags. A remote attacker could possibly use
 this issue to cause Django to consume resources, leading to a denial of
 service.

Update instructions:

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

Ubuntu 18.04 LTS
  python-django                   1:1.11.11-1ubuntu1.21+esm11
                                  Available with Ubuntu Pro
  python3-django                  1:1.11.11-1ubuntu1.21+esm11
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7501-2
  https://ubuntu.com/security/notices/USN-7501-1
  CVE-2025-32873