About the security content of Safari 14.1

This document describes the security content of Safari 14.1.

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Safari 14.1*

Released May 4, 2021

WebKit

Available for: macOS Catalina and macOS Mojave

Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Description: A memory corruption issue was addressed with improved state management.

CVE-2021-30665: yangkang (@dnpushme)&zerokeeper&bianliang of 360 ATA

WebKit

Available for: macOS Catalina and macOS Mojave

Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Description: An integer overflow was addressed with improved input validation.

CVE-2021-30663: an anonymous researcher

* Safari 14.1 includes the security content of Safari 14.1 (released April 26, 2021). After installing this update, the build number for Safari 14.1 is 15611.1.21.161.7 on macOS Catalina and 14611.1.21.161.7 on macOS Mojave.

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