About the security content of Safari 12.0.3

This document describes the security content of Safari 12.0.3.

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 updates page.

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

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

Safari 12.0.3

Safari Reader

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and macOS Mojave 10.14.3

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

Description: A cross-site scripting issue existed in Safari. This issue was addressed with improved URL validation.

CVE-2019-6228: Ryan Pickren (ryanpickren.com)

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and macOS Mojave 10.14.3

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

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

CVE-2019-6215: Lokihardt of Google Project Zero

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and macOS Mojave 10.14.3

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

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2019-6212: Mike Zhang from The Pangu team, Wen Xu of SSLab at Georgia Tech

CVE-2019-6216: Fluoroacetate working with Trend Micro's Zero Day Initiative

CVE-2019-6217: Fluoroacetate working with Trend Micro's Zero Day Initiative, Proteas, Shrek_wzw, and Zhuo Liang of Qihoo 360 Nirvan Team

CVE-2019-6226: Apple

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and macOS Mojave 10.14.3

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

Description: A memory corruption issue was addressed with improved memory handling.

CVE-2019-6227: Qixun Zhao of Qihoo 360 Vulcan Team

CVE-2019-6233: G. Geshev from MWR Labs working with Trend Micro's Zero Day Initiative

CVE-2019-6234: G. Geshev from MWR Labs working with Trend Micro's Zero Day Initiative

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and macOS Mojave 10.14.3

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

Description: A logic issue was addressed with improved validation.

CVE-2019-6229: Ryan Pickren (ryanpickren.com)

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and macOS Mojave 10.14.3

Impact: Processing maliciously crafted web content may disclose sensitive user information

Description: A logic issue was addressed with improved state management.

CVE-2019-8570: James Lee (@Windowsrcer) of S2SWWW.com

Additional recognition

Safari Reader

We would like to acknowledge Ryan Pickren (ryanpickren.com) for their assistance.