Security vulnerabilities fixed in Thunderbird 60.7.1 — Mozilla

A flaw in Thunderbird’s implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages, resulting in a potentially exploitable crash.
A flaw in Thunderbird’s implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash.
A flaw in Thunderbird’s implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email messages, resulting in a potentially exploitable crash.
A flaw in Thunderbird’s implementation of iCal causes a type confusion in icaltimezone_get_vtimezone_properties when processing certain email messages, resulting in a crash.