USN-4378-1: Flask vulnerability

USN-4378-1: Flask vulnerability

flask vulnerability

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

  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 ESM

Summary

Flask could be made to consume a large amount of memory if it
received a specially crafted input.

Software Description

  • flask – Micro web framework based on Werkzeug and Jinja2

Details

It was discovered that Flask incorrectly handled certain inputs.
An attacker could possibly use this issue to cause 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-flask0.12.2-3ubuntu0.1
python3-flask0.12.2-3ubuntu0.1
Ubuntu 16.04 LTS
python-flask0.10.1-2ubuntu0.1
python3-flask0.10.1-2ubuntu0.1
Ubuntu 14.04 ESM
python-flask – 0.10.1-2ubuntu0.1~esm1
python3-flask – 0.10.1-2ubuntu0.1~esm1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

Source: USN-4378-1: Flask vulnerability

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