About the security content of Safari 11.1

This document describes the security content of Safari 11.1.

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

Safari 11.1

Released March 29, 2018

Safari

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

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

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

CVE-2018-4102: Kai Zhao of 3H security team

CVE-2018-4116: @littlelailo, xisigr of Tencent's Xuanwu Lab (tencent.com)

Safari Downloads

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: In Private Browsing, some downloads were not removed from the downloads list

Description: An information leakage issue existed in the handling of downloads in Safari Private Browsing. This issue was addressed with additional validation.

CVE-2018-4186: an anonymous researcher

Entry added May 2, 2018

Safari Login AutoFill

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: A malicious website may be able to exfiltrate autofilled data in Safari without explicit user interaction.

Description: Safari autofill did not require explicit user interaction before taking place. The issue was addressed through improved autofill heuristics.

CVE-2018-4137

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

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

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

CVE-2018-4101: Yuan Deng of Ant-financial Light-Year Security Lab

CVE-2018-4114: found by OSS-Fuzz

CVE-2018-4118: Jun Kokatsu (@shhnjk)

CVE-2018-4119: an anonymous researcher working with Trend Micro's Zero Day Initiative

CVE-2018-4120: Hanming Zhang (@4shitak4) of Qihoo 360 Vulcan Team

CVE-2018-4121: Natalie Silvanovich of Google Project Zero

CVE-2018-4122: WanderingGlitch of Trend Micro’s Zero Day Initiative

CVE-2018-4125: WanderingGlitch of Trend Micro's Zero Day Initiative

CVE-2018-4127: an anonymous researcher working with Trend Micro's Zero Day Initiative

CVE-2018-4128: Zach Markley

CVE-2018-4129: likemeng of Baidu Security Lab working with Trend Micro's Zero Day Initiative

CVE-2018-4130: Omair working with Trend Micro's Zero Day Initiative

CVE-2018-4161: WanderingGlitch of Trend Micro's Zero Day Initiative

CVE-2018-4162: WanderingGlitch of Trend Micro's Zero Day Initiative

CVE-2018-4163: WanderingGlitch of Trend Micro's Zero Day Initiative

CVE-2018-4165: Hanming Zhang (@4shitak4) of Qihoo 360 Vulcan Team

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Visiting a maliciously crafted website may lead to a cross-site scripting attack

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

CVE-2018-4133: Anton Lopanitsyn of Wallarm, Linus Särud of Detectify (detectify.com), Yuji Tounai of NTT Communications Corporation

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction with indexing types causing an ASSERT failure

Description: An array indexing issue existed in the handling of a function in javascript core. This issue was addressed through improved checks.

CVE-2018-4113: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Processing maliciously crafted web content may lead to a denial of service

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

CVE-2018-4146: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: A malicious website may exfiltrate data cross-origin

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

CVE-2018-4117: an anonymous researcher, an anonymous researcher

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction causes an ASSERT failure

Description: This issue was addressed with improved checks.

CVE-2018-4207: found by OSS-Fuzz

Entry added May 2, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction causes an ASSERT failure

Description: This issue was addressed with improved checks.

CVE-2018-4208: found by OSS-Fuzz

Entry added May 2, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction causes an ASSERT failure

Description: This issue was addressed with improved checks.

CVE-2018-4209: found by OSS-Fuzz

Entry added May 2, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction with indexing types caused a failure

Description: An array indexing issue existed in the handling of a function in javascript core. This issue was addressed with improved checks.

CVE-2018-4210: found by OSS-Fuzz

Entry added May 2, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction causes an ASSERT failure

Description: This issue was addressed with improved checks.

CVE-2018-4212: found by OSS-Fuzz

Entry added May 2, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

Impact: Unexpected interaction causes an ASSERT failure

Description: This issue was addressed with improved checks.

CVE-2018-4213: found by OSS-Fuzz

Entry added May 2, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4

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

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

CVE-2018-4145: found by OSS-Fuzz

Entry added October 18, 2018

Additional recognition

WebKit

We would like to acknowledge Johnny Nipper of Tinder Security Team for their assistance.

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