A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.1.3, macOS Mojave 10.14.3, tvOS 12.1.2, watchOS 5.1.3. A remote attacker may be able to initiate a FaceTime call causing arbitrary code execution.Referenceshttps://support.apple.com/HT209446https://support.apple.com/HT209443https://support.apple.com/HT209448http://www.securityfocus.com/bid/106739https://www.exploit-db.com/exploits/46433/https://support.apple.com/HT209447
