Firefox has published a security advisory to address a vulnerability in the following products on the 11th of January 2022. It is recommended that you take the necessary precautions by ensuring your products are always updated.
Firefox 96
Firefox ESR 91.5
Thunderbird 91.5
For more information on these updates, you can follow these URLs:
https://www.mozilla.org/en-US/security/advisories/mfsa2022-01/
https://www.mozilla.org/en-US/security/advisories/mfsa2022-02/
https://www.mozilla.org/en-US/security/advisories/mfsa2022-03/
The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Firefox Security Advisory.pdf
References
Firefox security advisory (11th January 2021). Retrieved from Cybersecurity & Infrastructure Security Agency.
Firefox security advisory (11th January 2021). Retrieved from Mozilla.
https://www.mozilla.org/en-US/security/advisories/