Ubuntu has published a security advisory, highlighting a vulnerability in the following products listed below on the 20th of October 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
Ubuntu 20.04 LTS
Ubuntu 18.04 LTS
Ubuntu 16.04 ESM
Ubuntu 14.04 ESM
For more information on these updates, you can follow these URLs:
https://ubuntu.com/security/notices/USN-5117-1
https://ubuntu.com/security/notices/USN-5116-1
https://ubuntu.com/security/notices/USN-5115-1
https://ubuntu.com/security/notices/USN-5114-1
The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Ubuntu Security Advisory for Multiple Products.pdf
References
Ubuntu security advisory (21st October 2021). Retrieved from Canadian Centre for Cyber Security.
https://www.cyber.gc.ca/en/alerts/ubuntu-security-advisory-28
Ubuntu security advisory (20th October 2021). Retrieved from Ubuntu.
https://ubuntu.com/security/notices