This update for MozillaThunderbird fixes the following issues:
Security issues fixed:
Update to MozillaThunderbird 60.6.1 (bsc#1130262):
CVE-2019-9813: Fixed Ionmonkey type confusion with proto mutations
CVE-2019-9810: Fixed IonMonkey MArraySlice incorrect alias information
Update to MozillaThunderbird 60.6 (bsc#1129821):
CVE-2018-18506: Fixed an issue with Proxy Auto-Configuration file
Release notes: https://www.mozilla.org/en-US/security/advisories/mfsa2019-12/ https://www.mozilla.org/en-US/security/advisories/mfsa2019-11/