About the security content of Safari 10.0.3

This document describes the security content of Safari 10.0.3.

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 10.0.3

Safari

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

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

Description: A state management issue in the address bar was addressed through improved URL handling.

CVE-2017-2359: xisigr of Tencent's Xuanwu Lab (tencent.com)

WebKit

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

Impact: Processing maliciously crafted web content may exfiltrate data cross-origin

Description: A prototype access issue was addressed through improved exception handling.

CVE-2017-2350: Gareth Heyes of Portswigger Web Security

WebKit

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

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

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

CVE-2017-2354: Neymar of Tencent's Xuanwu Lab (tencent.com) working with Trend Micro's Zero Day Initiative

CVE-2017-2362: Ivan Fratric of Google Project Zero

CVE-2017-2373: Ivan Fratric of Google Project Zero

WebKit

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

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

Description: A memory initialization issue was addressed through improved memory handling.

CVE-2017-2355: Team Pangu and lokihardt at PwnFest 2016

WebKit

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

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

Description: Multiple memory corruption issues were addressed through improved input validation.

CVE-2017-2356: Team Pangu and lokihardt at PwnFest 2016

CVE-2017-2369: Ivan Fratric of Google Project Zero

CVE-2017-2366: Kai Kang of Tencent's Xuanwu Lab (tencent.com)

WebKit

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

Impact: Processing maliciously crafted web content may exfiltrate data cross-origin

Description: Multiple validation issues existed in the handling of page loading. This issue was addressed through improved logic.

CVE-2017-2363: lokihardt of Google Project Zero

CVE-2017-2364: lokihardt of Google Project Zero

WebKit

Available for: OS X Yosemite v10.10.5, OS X El Capitan v10.11.6, and macOS Sierra 10.12.3

Impact: Processing maliciously crafted web content may exfiltrate data cross-origin

Description: A validation issue existed in variable handling. This issue was addressed through improved validation.

CVE-2017-2365: lokihardt of Google Project Zero

Additional recognition

WebKit hardening

We would like to acknowledge Ben Gras, Kaveh Razavi, Erik Bosman, Herbert Bos, and Cristiano Giuffrida of the vusec group at Vrije Universiteit Amsterdam for their assistance.