A bottle security update has been released for Ubuntu Linux 18.04 LTS and 20.04 LTS.

USN-5105-1: Bottle vulnerability

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Ubuntu Security Notice USN-5105-1
October 06, 2021

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Bottle could be made to cache malicious requests if it received a
specially crafted input.

Software Description:
- python-bottle: fast and simple WSGI-framework for Python - documentation

Details:

It was discovered that Bottle incorrectly handled certain inputs.
An attacker could possibly use this issue to cache malicious requests.

Update instructions:

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

Ubuntu 20.04 LTS:
python3-bottle 0.12.15-2.1ubuntu0.1

Ubuntu 18.04 LTS:
python-bottle 0.12.13-1ubuntu0.1
python3-bottle 0.12.13-1ubuntu0.1

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

References:
  https://ubuntu.com/security/notices/USN-5105-1
CVE-2020-28473

Package Information:
  https://launchpad.net/ubuntu/+source/python-bottle/0.12.15-2.1ubuntu0.1
  https://launchpad.net/ubuntu/+source/python-bottle/0.12.13-1ubuntu0.1