About the security content of macOS Big Sur 11.3.1

June 7, 2024
Apple

About the security content of macOS Big Sur 11.3.1

This document describes the security content of macOS Big Sur 11.3.1.

About Apple security updates

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macOS Big Sur 11.3.1

Released May 3, 2021

WebKit

Available for: macOS Big Sur

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 Big Sur

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

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Published Date: May 03, 2021

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