About the security content of Safari 11

This document describes the security content of Safari 11.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.

For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.

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

Safari 11

Safari

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

Impact: Visiting a malicious website may lead to address bar spoofing

Description: An inconsistent user interface issue was addressed with improved state management.

CVE-2017-7085: xisigr of Tencent's Xuanwu Lab (tencent.com)

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

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

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-7081: Apple

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

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

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

CVE-2017-7087: Apple

CVE-2017-7091: Wei Yuan of Baidu Security Lab working with Trend Micro’s Zero Day Initiative

CVE-2017-7092: Samuel Gro and Niklas Baumstark working with Trend Micro's Zero Day Initiative, Qixun Zhao (@S0rryMybad) of Qihoo 360 Vulcan Team

CVE-2017-7093: Samuel Gro and Niklas Baumstark working with Trend Micro’s Zero Day Initiative

CVE-2017-7094: Tim Michaud (@TimGMichaud) of Leviathan Security Group

CVE-2017-7095: Wang Junjie, Wei Lei, and Liu Yang of Nanyang Technological University working with Trend Micro’s Zero Day Initiative

CVE-2017-7096: Wei Yuan of Baidu Security Lab

CVE-2017-7098: Felipe Freitas of Instituto Tecnológico de Aeronáutica

CVE-2017-7099: Apple

CVE-2017-7100: Masato Kinugawa and Mario Heiderich of Cure53

CVE-2017-7102: Wang Junjie, Wei Lei, and Liu Yang of Nanyang Technological University

CVE-2017-7104: likemeng of Baidu Secutity Lab

CVE-2017-7107: Wang Junjie, Wei Lei, and Liu Yang of Nanyang Technological University

CVE-2017-7111: likemeng of Baidu Security Lab (xlab.baidu.com) working with Trend Micro's Zero Day Initiative

CVE-2017-7117: lokihardt of Google Project Zero

CVE-2017-7120: chenqin (陈钦) of Ant-financial Light-Year Security Lab

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

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

Description: A logic issue existed in the handling of the parent-tab. This issue was addressed with improved state management.

CVE-2017-7089: Anton Lopanitsyn of ONSEC, Frans Rosén of Detectify

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

Impact: Cookies belonging to one origin may be sent to another origin

Description: A permissions issue existed in the handling of web browser cookies. This issue was addressed by no longer returning cookies for custom URL schemes.

CVE-2017-7090: Apple

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

Impact: Visiting a malicious website may lead to address bar spoofing

Description: An inconsistent user interface issue was addressed with improved state management.

CVE-2017-7106: Oliver Paukstadt of Thinking Objects GmbH (to.com)

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13

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

Description: Application Cache policy may be unexpectedly applied.

CVE-2017-7109: avlidienbrunn

WebKit

Available for: OS X El Capitan 10.11.6, and macOS Sierra 10.12.6, macOS High Sierra 10.13

Impact: A malicious website may be able to track users in Safari private browsing mode

Description: A permissions issue existed in the handling of web browser cookies. This issue was addressed with improved restrictions.

CVE-2017-7144: Mohammad Ghasemisharif of UIC’s BITS Lab

WebKit Storage

Available for: OS X El Capitan 10.11.6, and macOS Sierra 10.12.6, macOS High Sierra 10.13

Impact: Website data may persist after a Safari Private browsing session

Description: An information leakage issue existed in the handling of website data in Safari Private windows. This issue was addressed with improved data handling.

CVE-2017-7142: Rich Shawn O’Connell, an anonymous researcher, an anonymous researcher

Additional recognition

WebKit

We would like to acknowledge xisigr of Tencent's Xuanwu Lab (tencent.com) for their assistance.

WebKit

We would like to acknowledge Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter for their assistance.

WebKit

We would like to acknowledge redrain (hongyu of 360CERT) for their assistance.

WebKit Fullscreen

We would like to acknowledge xisigr of Tencent's Xuanwu Lab (tencent.com) for their assistance.