About the security content of Safari 17.3

This document describes the security content of Safari 17.3.

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 releases page.

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

For more information about security, see the Apple Product Security page.

Safari 17.3

Safari

Available for: macOS Monterey and macOS Ventura

Impact: A user's private browsing activity may be visible in Settings

Description: A privacy issue was addressed with improved handling of user preferences.

CVE-2024-23211: Mark Bowers

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: A maliciously crafted webpage may be able to fingerprint the user

Description: An access issue was addressed with improved access restrictions.

CVE-2024-23206: an anonymous researcher

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing web content may lead to arbitrary code execution

Description: The issue was addressed with improved memory handling.

CVE-2024-23213: Wangtaiyu of Zhongfu info

WebKit

Available for: macOS Monterey and macOS Ventura

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

Description: A type confusion issue was addressed with improved checks.

CVE-2024-23222

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: A malicious website may cause unexpected cross-origin behavior

Description: A logic issue was addressed with improved checks.

CVE-2024-23271: James Lee (@Windowsrcer)