CVE-2018-18513
A crash can occur when processing a crafted S/MIME message or an XPI package containing a crafted signature. This can be used as a denial-of-service (DOS) attack because Thunderbird reopens the last seen message on restart, triggering the crash again. This vulnerability affects Thunderbird < 60.5. Date published : 2019-04-26 https://bugzilla.mozilla.org/show_bug.cgi?id=1533300