[USN-5037-2] Firefox regression

========================================================================== Ubuntu Security Notice USN-5037-2 August 25, 2021
firefox regression ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.04 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
Summary:
USN-5037-1 caused a regression in Firefox.
Software Description: – firefox: Mozilla Open Source web browser
Details:
USN-5037-1 fixed vulnerabilities in Firefox. The update introduced a regression that caused Firefox to repeatedly prompt for a password. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, trick a user into accepting unwanted permissions, or execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.04: firefox 91.0.2+build1-0ubuntu0.21.04.1
Ubuntu 20.04 LTS: firefox 91.0.2+build1-0ubuntu0.20.04.1
Ubuntu 18.04 LTS: firefox 91.0.2+build1-0ubuntu0.18.04.1
After a standard system update you need to restart Firefox to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5037-2 ubuntu.com/security/notices/USN-5037-1 launchpad.net/bugs/1941496
Package Information:
launchpad.net/ubuntu/+source/firefox/91.0.2+build1-0ubuntu0.21.04.1
launchpad.net/ubuntu/+source/firefox/91.0.2+build1-0ubuntu0.20.04.1
launchpad.net/ubuntu/+source/firefox/91.0.2+build1-0ubuntu0.18.04.1