=========================================================================Ubuntu Security Notice USN-6111-1
May 29, 2023

flask vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Flask could be made to expose sensitive information in certain scenarios.

Software Description:
- flask: Micro web framework based on Werkzeug and Jinja2

Details:

It was discovered that Flask incorrectly handled certain data responses.
An attacker could possibly use this issue to expose sensitive information.

Update instructions:

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

Ubuntu 23.04:
  python3-flask                   2.2.2-2ubuntu1.1

Ubuntu 22.10:
  python3-flask                   2.0.3-1ubuntu1.1

Ubuntu 22.04 LTS:
  python3-flask                   2.0.1-2ubuntu1.1

Ubuntu 20.04 LTS:
  python3-flask                   1.1.1-2ubuntu0.1

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

References:
  https://ubuntu.com/security/notices/USN-6111-1
  CVE-2023-30861

Package Information:
  https://launchpad.net/ubuntu/+source/flask/2.2.2-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/flask/2.0.3-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/flask/2.0.1-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/flask/1.1.1-2ubuntu0.1