Provide references for CVE-2017-6998.
Where can I find more information about CVE-2017-6998?
References are available at: https://support.apple.com/HT207800, https://www.exploit-db.com/exploits/42555/, http://www.securityfocus.com/bid/98571, https://support.apple.com/HT207798, https://support.apple.com/HT207801.