An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. iCloud before 6.2.2 on Windows is affected. iTunes before 12.6.2 on Windows is affected. The issue involves the "WebKit Web Inspector" 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/HT207928
https://support.apple.com/HT207927
https://support.apple.com/HT207923
https://support.apple.com/HT207921
https://security.gentoo.org/glsa/201710-14