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Apple security documents reference vulnerabilities by CVE-ID when possible.
Released January 23, 2017
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 Tencentโs 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 Tencentโs Xuanwu Lab (tencent.com) working with Trend Microโs 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 Tencentโs 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
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.