This update for MozillaFirefox fixes the following issues:
- Mozilla Firefox 68.6.1esr MFSA 2020-11 (bsc#1168630) * CVE-2020-6819 (bmo#1620818) Use-after-free while running the nsDocShell destructor * CVE-2020-6820 (bmo#1626728) Use-after-free when handling a ReadableStream