Provide references for CVE-2018-4240.
Where can I find more information about CVE-2018-4240?
References are available at: https://support.apple.com/HT208850, https://support.apple.com/HT208851, http://www.securitytracker.com/id/1041027, https://support.apple.com/HT208848, https://support.apple.com/HT208849, https://www.exploit-db.com/exploits/45391/.