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APPLE-SA-2018-9-24-3 Safari 12

Safari 12 addresses the following:

Safari
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: A user may be unable to delete browsing history items
Description: Clearing a history item may not clear visits with
redirect chains. The issue was addressed with improved data deletion.
CVE-2018-4329: Hugo S. Diaz (coldpointblue)

Safari
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Visiting a malicious website by clicking a link may lead to
user interface spoofing
Description: An inconsistent user interface issue was addressed with
improved state management.
CVE-2018-4195: xisigr of Tencent’s Xuanwu Lab (www.tencent.com)

Security
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: A malicious website may be able to exfiltrate autofilled data
in Safari
Description: A logic issue was addressed with improved state
management.
CVE-2018-4307: Rafay Baloch of Pakistan Telecommunications Authority

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Unexpected interaction causes an ASSERT failure
Description: A memory corruption issue was addressed with improved
validation.
CVE-2018-4191: found by OSS-Fuzz

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Cross-origin SecurityErrors includes the accessed frame’s
origin
Description: The issue was addressed by removing origin information.
CVE-2018-4311: Erling Alf Ellingsen (@steike)

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A memory corruption issue was addressed with improved
state management.
CVE-2018-4316: crixer, Hanming Zhang (@4shitak4) of Qihoo 360 Vulcan
Team

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: Multiple memory corruption issues were addressed with
improved memory handling.
CVE-2018-4299: Samuel Groβ (saelo) working with Trend Micro’s Zero
Day Initiative
CVE-2018-4323: Ivan Fratric of Google Project Zero
CVE-2018-4328: Ivan Fratric of Google Project Zero
CVE-2018-4358: @phoenhex team (@bkth_ @5aelo @_niklasb) working with
Trend Micro’s Zero Day Initiative
CVE-2018-4359: Samuel Groß (@5aelo)

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: A malicious website may cause unexepected cross-origin
behavior
Description: A cross-origin issue existed with “iframe” elements.
This was addressed with improved tracking of security origins.
CVE-2018-4319: John Pettitt of Google

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: A malicious website may be able to execute scripts in the
context of another website
Description: A cross-site scripting issue existed in Safari. This
issue was addressed with improved URL validation.
CVE-2018-4309: an anonymous researcher working with Trend Micro’s
Zero Day Initiative

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2018-4197: Ivan Fratric of Google Project Zero
CVE-2018-4306: Ivan Fratric of Google Project Zero
CVE-2018-4312: Ivan Fratric of Google Project Zero
CVE-2018-4314: Ivan Fratric of Google Project Zero
CVE-2018-4315: Ivan Fratric of Google Project Zero
CVE-2018-4317: Ivan Fratric of Google Project Zero
CVE-2018-4318: Ivan Fratric of Google Project Zero

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: A malicious website may exfiltrate image data cross-origin
Description: A cross-site scripting issue existed in Safari. This
issue was addressed with improved URL validation.
CVE-2018-4345: an anonymous researcher

WebKit
Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, macOS
Mojave 10.14
Impact: Unexpected interaction causes an ASSERT failure
Description: A memory consumption issue was addressed with improved
memory handling.
CVE-2018-4361: found by Google OSS-Fuzz

Additional recognition

WebKit
We would like to acknowledge Cary Hartline, Hanming Zhang from 360
Vuclan team, Tencent Keen Security Lab working with Trend Micro’s
Zero Day Initiative, and Zach Malone of CA Technologies for their
assistance.

Installation note:

Safari 12 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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