This update for MozillaThunderbird to version 68.4.1 fixes the following issues:

Security issues fixed:

- CVE-2019-17026: IonMonkey type confusion with StoreElementHole and FallibleStoreElement
- CVE-2019-17016: Bypass of @namespace CSS sanitization during pasting
- CVE-2019-17017: Type Confusion in XPCVariant.cpp
- CVE-2019-17022: CSS sanitization does not escape HTML tags
- CVE-2019-17024: multiple Memory safety bugs fixed

Non-security issues fixed:

- Various improvements when setting up an account for a Microsoft Exchange
server. For example better detection for Office 365 accounts.

This update was imported from the SUSE:SLE-15:Update update project.