About the security content of Safari 12.1

This document describes the security content of Safari 12.1.

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

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Safari 12.1

Released March 25, 2019

Safari Reader

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

Impact: Enabling the Safari Reader feature on a maliciously crafted webpage may lead to universal cross site scripting

Description: A logic issue was addressed with improved validation.

CVE-2019-6204: Ryan Pickren (ryanpickren.com)

CVE-2019-8505: Ryan Pickren (ryanpickren.com)

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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

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

CVE-2019-8506: Samuel Groß of Google Project Zero

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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

Description: A memory corruption issue was addressed with improved state management.

CVE-2019-8535: Zhiyang Zeng (@Wester) of Tencent Blade Team

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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

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

CVE-2019-6201: dwfault working with ADLab of Venustech

CVE-2019-8518: Samuel Groß of Google Project Zero

CVE-2019-8523: Apple

CVE-2019-8524: G. Geshev working with Trend Micro Zero Day Initiative

CVE-2019-8558: Samuel Groß of Google Project Zero

CVE-2019-8559: Apple

CVE-2019-8563: Apple

CVE-2019-8638: found by OSS-Fuzz

CVE-2019-8639: found by OSS-Fuzz

Entry updated May 30, 2019

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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

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

CVE-2019-8536: Apple

CVE-2019-8544: an anonymous researcher

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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

Description: A cross-origin issue existed with the fetch API. This was addressed with improved input validation.

CVE-2019-8515: James Lee (@Windowsrcer)

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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-2019-7285: dwfault working at ADLab of Venustech

CVE-2019-8556: Apple

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

Impact: A malicious website may be able to execute scripts in the context of another website

Description: A logic issue was addressed with improved validation.

CVE-2019-8503: Linus Särud of Detectify

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

Impact: Processing maliciously crafted web content may result in the disclosure of process memory

Description: A validation issue was addressed with improved logic.

CVE-2019-7292: Zhunki and Zhiyi Zhang of 360 ESG Codesafe Team

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

Impact: A sandboxed process may be able to circumvent sandbox restrictions

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

CVE-2019-8562: Wen Xu of SSLab at Georgia Tech and Hanqing Zhao of Chaitin Security Research Lab

WebKit

Available for: macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and Mojave 10.14.4

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

Description: A logic issue was addressed with improved validation.

CVE-2019-8551: Ryan Pickren (ryanpickren.com)

Additional recognition

Safari

We would like to acknowledge Ryan Pickren (ryanpickren.com), Nikhil Mittal (@c0d3G33k) of Payatu Labs (payatu.com) for their assistance.

Entry updated May 30, 2019

WebKit

We would like to acknowledge Andrey Kovalev of Yandex Security Team for their assistance.

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