This update for MozillaFirefox fixes the following issues: - Firefox Extended Support Release 78.2.0 ESR * Fixed: Various stability, functionality, and security fixes - Mozilla Firefox ESR 78.2 MFSA 2020-38 * 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-2020-15670 Memory safety bugs fixed in Firefox 80 and Firefox ESR 78.2 - Fixed Firefox tab crash in FIPS mode .