About the security content of Safari 16.5

This document describes the security content of Safari 16.5.

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 16.5

Released May 18, 2023

WebKit

Available for: macOS Big Sur and macOS Monterey

Impact: Processing web content may disclose sensitive information

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

WebKit Bugzilla: 255075

CVE-2023-32402: Ignacio Sanmillan (@ulexec)

Entry updated December 21, 2023

WebKit

Available for: macOS Big Sur and macOS Monterey

Impact: Processing web content may disclose sensitive information

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

WebKit Bugzilla: 254781

CVE-2023-32423: Ignacio Sanmillan (@ulexec)

WebKit

Available for: macOS Big Sur and macOS Monterey

Impact: A remote attacker may be able to break out of Web Content sandbox. Apple is aware of a report that this issue may have been actively exploited.

Description: The issue was addressed with improved bounds checks.

WebKit Bugzilla: 255350

CVE-2023-32409: Clément Lecigne of Google’s Threat Analysis Group and Donncha Ó Cearbhaill of Amnesty International’s Security Lab

WebKit

Available for: macOS Big Sur and macOS Monterey

Impact: Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.

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

WebKit Bugzilla: 254930

CVE-2023-28204: an anonymous researcher

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

WebKit Bugzilla: 254840

CVE-2023-32373: an anonymous researcher

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Published Date: June 19, 2024