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.
For more information about security, see the Apple Product Security page.
Safari 16.3*
Released February 13, 2023
WebKit
Available for: macOS Big Sur and macOS Monterey
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: The issue was addressed with improved memory handling.
WebKit Bugzilla: 248268
CVE-2023-23518: YeongHyeon Choi (@hyeon101010), Hyeon Park (@tree_segment), SeOk JEON (@_seokjeon), YoungSung Ahn (@_ZeroSung), JunSeo Bae (@snakebjs0107), and Dohyun Lee (@l33d0hyun) of Team ApplePIE
Entry added March 16, 2023
WebKit
Available for: macOS Big Sur and macOS Monterey
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: The issue was addressed with improved memory handling.
WebKit Bugzilla: 248268
CVE-2023-23517: YeongHyeon Choi (@hyeon101010), Hyeon Park (@tree_segment), SeOk JEON (@_seokjeon), YoungSung Ahn (@_ZeroSung), JunSeo Bae (@snakebjs0107), and Dohyun Lee (@l33d0hyun) of Team ApplePIE
Entry added March 16, 2023
WebKit
Available for: macOS Big Sur and macOS Monterey
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: The issue was addressed with improved checks.
WebKit Bugzilla: 245464
CVE-2023-23496: ChengGang Wu, Yan Kang, YuHao Hu, Yue Sun, Jiming Wang, JiKai Ren, and Hang Shu of Institute of Computing Technology, Chinese Academy of Sciences
Entry added March 16, 2023
WebKit
Available for: macOS Big Sur and macOS Monterey
Impact: An HTML document may be able to render iframes with sensitive user information
Description: This issue was addressed with improved iframe sandbox enforcement.
WebKit Bugzilla: 241753
CVE-2022-0108
Entry added March 16, 2023
WebKit
Available for: macOS Big Sur and macOS Monterey
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 type confusion issue was addressed with improved checks.
WebKit Bugzilla: 251944
CVE-2023-23529: an anonymous researcher
Additional recognition
WebKit
We would like to acknowledge Eliya Stein of Confiant for their assistance.
Entry added March 16, 2023
WebKit
We would like to acknowledge Hyeon Park (@tree_segment), Se-Ok JEON (@_seokjeon), YoungSung Ahn (@_ZeroSung), JunSeo Bae (@snakebjs0107), YeongHyeon Choi (@hyeon101010), JeongHoon Shin (@singi21a), Aviram Jenik (@aviramj), and Dohyun Lee (@l33d0hyun) of Team ApplePIE for their assistance.
Entry added March 16, 2023
* After installing this update, the build number for Safari 16.3 is 16614.4.6.11.6 on macOS Big Sur and 17614.4.6.11.6 on macOS Monterey.