[USN-5321-3] Firefox regressions

========================================================================== Ubuntu Security Notice USN-5321-3 March 24, 2022
firefox regressions ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
USN-5321-1 introduced minor regressions in Firefox.
Software Description: – firefox: Mozilla Open Source web browser
USN-5321-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. 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, spoof the browser UI, bypass security restrictions, obtain sensitive information, or execute arbitrary code. (CVE-2022-0843, CVE-2022-26381, CVE-2022-26382, CVE-2022-26383, CVE-2022-26384, CVE-2022-26385)
A TOCTOU bug was discovered when verifying addon signatures during install. A local attacker could potentially exploit this to trick a user into installing an addon with an invalid signature. (CVE-2022-26387)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: firefox 98.0.2+build1-0ubuntu0.21.10.1
Ubuntu 20.04 LTS: firefox 98.0.2+build1-0ubuntu0.20.04.1
Ubuntu 18.04 LTS: firefox 98.0.2+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-5321-3 ubuntu.com/security/notices/USN-5321-1 launchpad.net/bugs/1966306
Package Information: launchpad.net/ubuntu/+source/firefox/98.0.2+build1-0ubuntu0.21.10.1 launchpad.net/ubuntu/+source/firefox/98.0.2+build1-0ubuntu0.20.04.1 launchpad.net/ubuntu/+source/firefox/98.0.2+build1-0ubuntu0.18.04.1