About the security content of Safari 15.2

This document describes the security content of Safari 15.2.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.

Apple security documents reference vulnerabilities by CVE-ID when possible.

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Safari 15.2

Released December 14, 2021

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A buffer overflow issue was addressed with improved memory handling.

CVE-2021-30934: Dani Biro

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A use after free issue was addressed with improved memory management.

CVE-2021-30936: Chijin Zhou of ShuiMuYuLin Ltd and Tsinghua wingtecher lab

CVE-2021-30951: Pangu via Tianfu Cup

Entry updated May 25, 2022

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

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

CVE-2021-30952: @18f and @jq0904 of DBAPP Security‘s weibin lab via Tianfu Cup

Entry updated May 25, 2022

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A race condition was addressed with improved state handling.

CVE-2021-30984: Kunlun Lab via Tianfu Cup

Entry updated May 25, 2022

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: An out-of-bounds read was addressed with improved bounds checking.

CVE-2021-30953: Jianjun Dai of 360 Vulnerability Research Institute via Tianfu Cup

Entry updated May 25, 2022

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A type confusion issue was addressed with improved memory handling.

CVE-2021-30954: Kunlun Lab via Tianfu Cup

Entry updated May 25, 2022

Additional recognition

WebKit

We would like to acknowledge Peter Snyder of Brave and Soroush Karami for their assistance.

Entry added May 25, 2022

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Published Date: May 25, 2022