About the security content of Safari 17.6

This document describes the security content of Safari 17.6.

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 17.6

Safari

Available for: macOS Monterey and macOS Ventura

Impact: Visiting a website that frames malicious content may lead to UI spoofing

Description: The issue was addressed with improved UI handling.

CVE-2024-40817: Yadhu Krishna M and Narendra Bhati, Manager of Cyber Security At Suma Soft Pvt. Ltd, Pune (India)

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

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

CVE-2024-40776: Huang Xilin of Ant Group Light-Year Security Lab

CVE-2024-40782: Maksymilian Motyl

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

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

CVE-2024-40779: Huang Xilin of Ant Group Light-Year Security Lab

CVE-2024-40780: Huang Xilin of Ant Group Light-Year Security Lab

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing maliciously crafted web content may lead to a cross site scripting attack

Description: This issue was addressed with improved checks.

CVE-2024-40785: Johan Carlsson (joaxcar)

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

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

CVE-2024-40789: Seunghyun Lee (@0x10n) of KAIST Hacking Lab working with Trend Micro Zero Day Initiative

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

Description: This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org.

CVE-2024-4558

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Private Browsing tabs may be accessed without authentication

Description: This issue was addressed through improved state management.

CVE-2024-40794: Matthew Butler

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

Description: The issue was addressed with improved checks.

CVE-2024-44185: Gary Kwong

WebKit

Available for: macOS Monterey and macOS Ventura

Impact: A user may be able to bypass some web content restrictions

Description: An issue in the handling of URL protocols was addressed with improved logic.

CVE-2024-44206: Andreas Jaegersberger and Ro Achterberg

Additional recognition

WebKit

We would like to acknowledge an anonymous researcher for their assistance.