An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. tvOS before 10.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to conduct a timing side-channel attack to bypass the Same Origin Policy and obtain sensitive information via a crafted web site that uses SVG filters.
https://support.apple.com/HT207924
https://support.apple.com/HT207923
https://support.apple.com/HT207921
https://security.gentoo.org/glsa/201710-14