CVE-2019-11704: libical: Heap buffer overflow in icalmemory_strdup_and_dequote function in icalvalue.c

Severity: Critical

CVSS Score: 9.8

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. This vulnerability affects Thunderbird < 60.7.1.