An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. iCloud before 6.2.1 on Windows is affected. tvOS before 10.2.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
https://support.apple.com/HT207804
https://support.apple.com/HT207803
https://support.apple.com/HT207801
https://support.apple.com/HT207798
https://security.gentoo.org/glsa/201706-15