Log Message:
firefox68: Update to 68.12.0

Security Vulnerabilities fixed in Firefox ESR 68.12

    #CVE-2020-15663: Downgrade attack on the Mozilla Maintenance Service could
    have resulted in escalation of privilege

    #CVE-2020-15664: Attacker-induced prompt for extension installation

    #CVE-2020-15669: Use-After-Free when aborting an operation