About the security content of macOS Catalina 10.15.1, Security Update 2019-001 and Security Update 2019-006

This document describes the security content of macOS Catalina 10.15.1, Security Update 2019-001 and Security Update 2019-006.

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.

macOS Catalina 10.15.1, Security Update 2019-001, Security Update 2019-006

Accounts

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15

Impact: A remote attacker may be able to leak memory

Description: An out-of-bounds read was addressed with improved input validation.

CVE-2019-8787: Steffen Klee of Secure Mobile Networking Lab at Technische Universität Darmstadt

Accounts

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: AirDrop transfers may be unexpectedly accepted while in Everyone mode

Description: A logic issue was addressed with improved validation.

CVE-2019-8796: Allison Husain of UC Berkeley

AirDrop

Available for: macOS Catalina 10.15

Impact: AirDrop transfers may be unexpectedly accepted while in Everyone mode

Description: A logic issue was addressed with improved validation.

CVE-2019-8796: Allison Husain of UC Berkeley

AMD

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An application may be able to execute arbitrary code with kernel privileges

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

CVE-2019-8748: Lilang Wu and Moony Li of TrendMicro Mobile Security Research Team

apache_mod_php

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: Multiple issues in PHP

Description: Multiple issues were addressed by updating to PHP version 7.3.8.

CVE-2019-11041

CVE-2019-11042

APFS

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A memory corruption issue was addressed with improved state management.

CVE-2019-8824: Mac working with Trend Micro's Zero Day Initiative

App Store

Available for: macOS Catalina 10.15

Impact: A local attacker may be able to log in to the account of a previously logged-in user without valid credentials.

Description: An authentication issue was addressed with improved state management.

CVE-2019-8803: Kiyeon An, 차민규 (CHA Minkyu)

AppleGraphicsControl

Available for: macOS Catalina 10.15

Impact: An application may be able to read restricted memory

Description: A validation issue was addressed with improved input sanitisation.

CVE-2019-8817: Arash Tohidi

AppleGraphicsControl

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8716: Zhiyi Zhang of Codesafe Team of Legendsec at Qi'anxin Group, Zhuo Liang of Qihoo 360 Vulcan Team

Associated Domains

Available for: macOS Catalina 10.15

Impact: Improper URL processing may lead to data exfiltration

Description: An issue existed in the parsing of URLs. This issue was addressed with improved input validation.

CVE-2019-8788: Juha Lindstedt of Pakastin, Mirko Tanania, Rauli Rikama of Zero Keyboard Ltd

Audio

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution

Description: A memory corruption issue was addressed with improved state management.

CVE-2019-8706: Yu Zhou of Ant-Financial Light-Year Security Lab

Audio

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8785: Ian Beer of Google Project Zero

CVE-2019-8797: 08Tc3wBB working with SSD Secure Disclosure

Audio

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: Processing a maliciously crafted audio file may disclose restricted memory

Description: An out-of-bounds read was addressed with improved input validation.

CVE-2019-8850: Anonymous working with Trend Micro’s Zero Day Initiative

Books

Available for: macOS Catalina 10.15

Impact: Parsing a maliciously crafted iBooks file may lead to disclosure of user information

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

CVE-2019-8789: Gertjan Franken of imec-DistriNet, KU Leuven

Contacts

Available for: macOS Catalina 10.15

Impact: Processing a maliciously contact may lead to UI spoofing

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

CVE-2017-7152: Oliver Paukstadt of Thinking Objects GmbH (to.com)

CoreAudio

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: Playing a malicious audio file may lead to arbitrary code execution

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

CVE-2019-8592: riusksk of VulWar Corp working with Trend Micro’s Zero Day Initiative

CoreAudio

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: Processing a maliciously crafted movie may result in the disclosure of process memory

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

CVE-2019-8705: riusksk of VulWar Corp working with Trend Micro’s Zero Day Initiative

CoreMedia

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

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

Description: A memory corruption issue was addressed with improved state management.

CVE-2019-8825: Found by GWP-ASan in Google Chrome

CUPS

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: An attacker in a privileged network position may be able to leak sensitive user information

Description: An input validation issue was addressed with improved input validation.

CVE-2019-8736: Pawel Gocyla of ING Tech Poland (ingtechpoland.com)

CUPS

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: Processing a maliciously crafted string may lead to heap corruption

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

CVE-2019-8767: Stephen Zeisberg

CUPS

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: An attacker in a privileged position may be able to perform a denial-of-service attack

Description: A denial-of-service issue was addressed with improved validation.

CVE-2019-8737: Pawel Gocyla of ING Tech Poland (ingtechpoland.com)

File Quarantine

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: A malicious application may be able to elevate privileges

Description: This issue was addressed by removing the vulnerable code.

CVE-2019-8509: CodeColorist of Ant-Financial Light-Year Labs

File System Events

Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8798: ABC Research s.r.o. working with Trend Micro's Zero Day Initiative

Foundation

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution

Description: An out-of-bounds read was addressed with improved input validation.

CVE-2019-8746: natashenka and Samuel Groß of Google Project Zero

Graphics

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: Processing a malicious shader may result in unexpected application termination or arbitrary code execution

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

CVE-2018-12152: Piotr Bania of Cisco Talos

CVE-2018-12153: Piotr Bania of Cisco Talos

CVE-2018-12154: Piotr Bania of Cisco Talos

Graphics Driver

Available for: macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8784: Vasiliy Vasilyev and Ilya Finogeev of Webinar, LLC

Intel Graphics Driver

Available for: macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8807: Yu Wang of Didi Research America

IOGraphics

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: A local user may be able to cause unexpected system termination or read kernel memory

Description: An out-of-bounds read was addressed with improved bounds checking.

CVE-2019-8759: Another of 360 Nirvan Team

iTunes

Available for: macOS Catalina 10.15

Impact: Running the iTunes installer in an untrusted directory may result in arbitrary code execution

Description: A dynamic library loading issue existed in iTunes setup. This was addressed with improved path searching.

CVE-2019-8801: Hou JingYi (@hjy79425575) of Qihoo 360 CERT

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A memory corruption issue was addressed with improved state management.

CVE-2019-8709: derrek (@derrekr6)

Kernel

Available for: macOS Catalina 10.15

Impact: An application may be able to read restricted memory

Description: A validation issue was addressed with improved input sanitisation.

CVE-2019-8794: 08Tc3wBB working with SSD Secure Disclosure

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with kernel privileges

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

CVE-2019-8717: Jann Horn of Google Project Zero

CVE-2019-8786: Wen Xu of Georgia Tech, Microsoft Offensive Security Research Intern

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: A malicious application may be able to determine kernel memory layout

Description: A memory corruption issue existed in the handling of IPv6 packets. This issue was addressed with improved memory management.

CVE-2019-8744: Zhuo Liang of Qihoo 360 Vulcan Team

Kernel

Available for: macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A memory corruption vulnerability was addressed with improved locking.

CVE-2019-8829: Jann Horn of Google Project Zero

libxml2

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: Multiple issues in libxml2

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

CVE-2019-8749: Found by OSS-Fuzz

CVE-2019-8756: Found by OSS-Fuzz

libxslt

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: Multiple issues in libxslt

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

CVE-2019-8750: Found by OSS-Fuzz

manpages

Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15

Impact: A malicious application may be able to gain root privileges

Description: A validation issue was addressed with improved logic.

CVE-2019-8802: Csaba Fitzl (@theevilbit)

PDFKit

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An attacker may be able to exfiltrate the contents of an encrypted PDF

Description: An issue existed in the handling of links in encrypted PDFs. This issue was addressed by adding a confirmation prompt.

CVE-2019-8772: Jens Müller of Ruhr University Bochum, Fabian Ising of FH Münster University of Applied Sciences, Vladislav Mladenov of Ruhr University Bochum, Christian Mainka of Ruhr University Bochum, Sebastian Schinzel of FH Münster University of Applied Sciences and Jörg Schwenk of Ruhr University Bochum

PluginKit

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: A local user may be able to check for the existence of arbitrary files

Description: A logic issue was addressed with improved restrictions.

CVE-2019-8708: An anonymous researcher

PluginKit

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8715: An anonymous researcher

Screen Sharing Server

Available for: macOS Catalina 10.15

Impact: A user who shares their screen may not be able to end screen sharing

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

CVE-2019-8858: Saul van der Bijl of Saul’s Place Counseling B.V.

System Extensions

Available for: macOS Catalina 10.15

Impact: An application may be able to execute arbitrary code with system privileges

Description: A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement.

CVE-2019-8805: Scott Knight (@sdotknight) of VMware Carbon Black TAU

UIFoundation

Available for: macOS Catalina 10.15

Impact: A malicious HTML document may be able to render iframes with sensitive user information

Description: A cross-origin issue existed with "iframe" elements. This was addressed with improved tracking of security origins.

CVE-2019-8754: Renee Trisberg of SpectX

UIFoundation

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: Processing a maliciously crafted text file may lead to arbitrary code execution

Description: A buffer overflow was addressed with improved bounds checking.

CVE-2019-8745: riusksk of VulWar Corp working with Trend Micro’s Zero Day Initiative

UIFoundation

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An application may be able to execute arbitrary code with system privileges

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

CVE-2019-8831: riusksk of VulWar Corp working with Trend Micro’s Zero Day Initiative

UIFoundation

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: Parsing a maliciously crafted text file may lead to disclosure of user information

Description: This issue was addressed with improved checks.

CVE-2019-8761: Renee Trisberg of SpectX

Wi-Fi

Available for: macOS Catalina 10.15

Impact: An attacker in Wi-Fi range may be able to view a small amount of network traffic

Description: A logic issue existed in the handling of state transitions. This was addressed with improved state management.

CVE-2019-15126: Milos Cermak at ESET

Additional recognition

CFNetwork

We would like to acknowledge Lily Chen of Google for their assistance.

Find My

We would like to acknowledge Amr Elseehy for their assistance.

Kernel

We would like to acknowledge Brandon Azad of Google Project Zero, Daniel Roethlisberger of Swisscom CSIRT, Jann Horn of Google Project Zero for their assistance.

libresolv

We would like to acknowledge enh at Google for their assistance.

Local Authentication

We would like to acknowledge Ryan Lopopolo for their assistance.

mDNSResponder

We would like to acknowledge Gregor Lang of e.solutions GmbH for their assistance.

Postfix

We would like to acknowledge Chris Barker of Puppet for their assistance.

python

We would like to acknowledge an anonymous researcher for their assistance.

VPN

We would like to acknowledge Royce Gawron of Second Son Consulting, Inc. for their assistance.