The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: firefox 69.0+build2-0ubuntu0.19.04.1 Ubuntu 18.04 LTS: firefox 69.0+build2-0ubuntu0.18.04.1 Ubuntu 16.04 LTS: firefox 69.0+build2-0ubuntu0.16.04.4 After a standard system update you need to restart Firefox to make all the necessary changes.
CVE-2019-11734, CVE-2019-11735, CVE-2019-11737, CVE-2019-11738,
CVE-2019-11740, CVE-2019-11741, CVE-2019-11742, CVE-2019-11743,
CVE-2019-11744, CVE-2019-11746, CVE-2019-11747, CVE-2019-11748,
CVE-2019-11749, CVE-2019-11750, CVE-2019-11752, CVE-2019-5849,
CVE-2019-9812
https://launchpad.net/ubuntu/+source/firefox/69.0+build2-0ubuntu0.19.04.1 https://launchpad.net/ubuntu/+source/firefox/69.0+build2-0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/firefox/69.0+build2-0ubuntu0.16.04.4
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