Security fixes:
- CVE-2020-12399: Timing attack on DSA signatures in NSS library
- CVE-2020-12405: Use-after-free in SharedWorkerService
- CVE-2020-12406: JavaScript Type confusion with NativeTypes
- CVE-2020-12410: Memory safety bugs fixed in Thunderbird 68.9.0
- CVE-2020-12398: Security downgrade with IMAP STARTTLS leads to information leakage
Signed-off-by: Tobias Manske <tobias.manske@mailbox.org>
Upstream Summary: https://www.thunderbird.net/en-US/thunderbird/68.9.0/releasenotes/
Security fixes: https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/