About the security content of Safari 11.1
This document describes the security content of Safari 11.1 (v. 11605.1.33.1.4, 12605.1.33.1.4, and 13605.1.33.1.4).
About Apple security updates
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Apple security documents reference vulnerabilities by CVE-ID when possible.
Safari 11.1
WebKit
Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved state management.
CVE-2018-4200: Ivan Fratric of Google Project Zero
WebKit
Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2018-4204: Richard Zhu (fluorescence) working with Trend Micro's Zero Day Initiative, found by OSS-Fuzz
To check the version of Safari installed on your Mac:
Open Safari.
Choose Safari > About Safari.
If the latest version of Safari 11.1 is installed, you see:
Version 11.1 (11605.1.33.1.4) on OS X El Capitan 10.11.6
Version 11.1 (12605.1.33.1.4) on macOS Sierra 10.12.6
Version 11.1 (13605.1.33.1.4) on macOS High Sierra 10.13.4
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