About the security content of Safari 9.1.2

This document describes the security content of Safari 9.1.2.

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Safari 9.1.2

Released July 18, 2016

WebKit

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a maliciously crafted website may lead to arbitrary code execution

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

CVE-2016-4589 : Tongbo Luo and Bo Qu of Palo Alto Networks

CVE-2016-4622 : Samuel Gross working with Trend Micro's Zero Day

CVE-2016-4623 : Apple

CVE-2016-4624 : Apple

CVE-2016-4586 : Apple

WebKit

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a malicious website may disclose image data from another website

Description: A timing issue existed in the processing of SVG. This issue was addressed through improved validation.

CVE-2016-4583 : Roeland Krak

WebKit

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a maliciously crafted webpage may lead to a system denial of service

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

CVE-2016-4592 : Mikhail

WebKit

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a maliciously crafted website may leak sensitive data

Description: A permissions issue existed in the handling of the location variable. This was addressed though additional ownership checks.

CVE-2016-4591 : ma.la of LINE Corporation

WebKit

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a malicious website may lead to user interface spoofing

Description: An origin inheritance issue existed in parsing of about: URLs. This was addressed through improved validation of security origins.

CVE-2016-4590 : xisigr of Tencent's Xuanwu Lab (www.tencent.com)

WebKit JavaScript Bindings

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a maliciously crafted website may lead to script execution in the context of a non-HTTP service

Description: A cross-protocol cross-site scripting (XPXSS) issue existed in Safari when submitting forms to non-HTTP services compatible with HTTP/0.9. This issue was addressed by disabling scripts and plugins on resources loaded over HTTP/0.9.

CVE-2016-4651 : Obscure

WebKit Page Loading

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: A malicious website may exfiltrate data cross-origin

Description: A cross-site scripting issue existed in Safari URL redirection. This issue was addressed through improved URL validation on redirection.

CVE-2016-4585 : Takeshi Terada of Mitsui Bussan Secure Directions, Inc. (www.mbsd.jp)

WebKit Page Loading

Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11.6

Impact: Visiting a maliciously crafted website may lead to arbitrary code execution

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

CVE-2016-4584 : Chris Vienneau

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