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. This vulnerability affects Thunderbird < 60.7.1.
[
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "60.7.1",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]