About the security content of Safari 13.0.3

This document describes the security content of Safari 13.0.3.

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.

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

For more information about security, see the Apple Product Security page.

Safari 13.0.3

WebKit

Available for: macOS Mojave 10.14.6 and macOS High Sierra 10.13.6, and included in macOS Catalina 10.15.1

Impact: Processing maliciously crafted web content may lead to universal cross-site scripting

Description: A logic issue was addressed with improved state management.

CVE-2019-8813: an anonymous researcher

WebKit

Available for: macOS Mojave 10.14.6 and macOS High Sierra 10.13.6, and included in macOS Catalina 10.15.1

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

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

CVE-2019-8782: Cheolung Lee of LINE+ Security Team

CVE-2019-8783: Cheolung Lee of LINE+ Graylab Security Team

CVE-2019-8808: found by OSS-Fuzz

CVE-2019-8811: Soyeon Park of SSLab at Georgia Tech

CVE-2019-8812: JunDong Xie of Ant-financial Light-Year Security Lab

CVE-2019-8814: Cheolung Lee of LINE+ Security Team

CVE-2019-8816: Soyeon Park of SSLab at Georgia Tech

CVE-2019-8819: Cheolung Lee of LINE+ Security Team

CVE-2019-8820: Samuel Groß of Google Project Zero

CVE-2019-8821: Sergei Glazunov of Google Project Zero

CVE-2019-8822: Sergei Glazunov of Google Project Zero

CVE-2019-8823: Sergei Glazunov of Google Project Zero

WebKit

Available for: macOS Mojave 10.14.6 and macOS High Sierra 10.13.6, and included in macOS Catalina 10.15.1

Impact: Visiting a maliciously crafted website may reveal the sites a user has visited

Description: The HTTP referrer header may be used to leak browsing history. The issue was resolved by downgrading all third-party referrers to their origin.

CVE-2019-8827: Artur Janc, Krzysztof Kotowicz, Lukas Weichselbaum, and Roberto Clapis of Google Security Team

WebKit Process Model

Available for: macOS Mojave 10.14.6 and macOS High Sierra 10.13.6, and included in macOS Catalina 10.15.1

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

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

CVE-2019-8815: Apple

Additional recognition

WebKit

We would like to acknowledge Dlive of Tencent's Xuanwu Lab and Zhiyi Zhang of Codesafe Team of Legendsec at Qi'anxin Group for their assistance.