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APPLE-SA-2019-1-22-5 Safari 12.0.3

Safari 12.0.3 is now available and addresses the following:

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: an anonymous researcher, 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)

Additional recognition

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

WebKit
We would like to acknowledge James Lee (@Windowsrcer) of Kryptos
Logic for their assistance.

Installation note:

Safari 12.0.3 may be obtained from the Mac App Store.

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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