The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: firefox 111.0+build2-0ubuntu0.20.04.1 Ubuntu 18.04 LTS: firefox 111.0+build2-0ubuntu0.18.04.1 After a standard system update you need to restart Firefox to make all the necessary changes.
https://ubuntu.com/security/notices/USN-5954-1
CVE-2023-25750, CVE-2023-25751, CVE-2023-25752, CVE-2023-28160,
CVE-2023-28161, CVE-2023-28162, CVE-2023-28164, CVE-2023-28176,
CVE-2023-28177
https://launchpad.net/ubuntu/+source/firefox/111.0+build2-0ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/firefox/111.0+build2-0ubuntu0.18.04.1
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