About the security content of Security Update 2018-001

This document describes the security content of Security Update 2018-001.

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Security Update 2018-001

Released April 24, 2018

Crash Reporter

Available for: macOS High Sierra 10.13.4

Impact: An application may be able to gain elevated privileges

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

CVE-2018-4206: Ian Beer of Google Project Zero


Available for: macOS High Sierra 10.13.4

Impact: A malicious application may be able to execute arbitrary code with kernel privileges

Description: In some circumstances, some operating systems may not expect or properly handle an Intel architecture debug exception after certain instructions. The issue appears to be from an undocumented side effect of the instructions. An attacker might utilize this exception handling to gain access to Ring 0 and access sensitive memory or control operating system processes.

CVE-2018-8897: Andy Lutomirski, Nick Peterson (linkedin.com/in/everdox) of Everdox Tech LLC

Entry added May 8, 2018


Available for: macOS High Sierra 10.13.4

Impact: Processing a maliciously crafted text message may lead to UI spoofing

Description: A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.

CVE-2018-4187: Zhiyang Zeng (@Wester) of Tencent Security Platform Department, Roman Mueller (@faker_)

Installing Security Update 2018-001 updates Safari to version 11.1 (13605.

To check the version of Safari installed on your Mac:

  1. Open Safari.

  2. Choose Safari > About Safari.

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