About the security content of Safari 11.1.2

This document describes the security content of Safari 11.1.2.

About Apple security updates

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

Safari 11.1.2

Released July 9, 2018

Safari

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

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

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

CVE-2018-4279: Ruilin Yang, Xu Taoyu (xia0yu.win)

CVE-2018-4362: Jun Kokatsu (@shhnjk)

Entry updated October 30, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

Description: A memory corruption issue was addressed with improved memory handling.

CVE-2018-4270: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: A malicious website may exfiltrate audio data cross-origin

Description: Sound fetched through audio elements may be exfiltrated cross-origin. This issue was addressed with improved audio taint tracking.

CVE-2018-4278: Jun Kokatsu (@shhnjk)

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

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

Description: A type confusion issue was addressed with improved memory handling.

CVE-2018-4284: found by OSS-Fuzz

Entry updated October 30, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: A malicious website may be able to cause a denial of service

Description: A race condition was addressed with additional validation.

CVE-2018-4266: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

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

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

CVE-2018-4261: Omair working with Trend Micro's Zero Day Initiative

CVE-2018-4262: Mateusz Krzywicki working with Trend Micro's Zero Day Initiative

CVE-2018-4263: Arayz working with Trend Micro's Zero Day Initiative

CVE-2018-4264: found by OSS-Fuzz, Yu Zhou and Jundong Xie of Ant-financial Light-Year Security Lab

CVE-2018-4265: cc working with Trend Micro's Zero Day Initiative

CVE-2018-4267: Arayz of Pangu team working with Trend Micro's Zero Day Initiative

CVE-2018-4272: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

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

CVE-2018-4271: found by OSS-Fuzz

CVE-2018-4273: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

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

Description: A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.

CVE-2018-4274: Tomasz Bojarski

Entry updated October 30, 2018

WebKit Page Loading

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

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

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

CVE-2018-4260: xisigr of Tencent's Xuanwu Lab (tencent.com)

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