About the security content of macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra

This document describes the security content of macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra.

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 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra

Accounts

Available for: macOS Catalina 10.15.3

Impact: A sandboxed process may be able to circumvent sandbox restrictions

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9772: Allison Husain of UC Berkeley

Apple HSSPI Support

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

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-2020-3903: Proteas of Qihoo 360 Nirvan Team

AppleGraphicsControl

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.3

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

Description: Multiple memory corruption issues were addressed with improved state management.

CVE-2020-3904: Proteas of Qihoo 360 Nirvan Team

AppleMobileFileIntegrity

Available for: macOS Catalina 10.15.3

Impact: An application may be able to use arbitrary entitlements

Description: This issue was addressed with improved checks.

CVE-2020-3883: Linus Henze (pinauten.de)

Bluetooth

Available for: macOS Catalina 10.15.3

Impact: An attacker in a privileged network position may be able to intercept Bluetooth traffic

Description: An issue existed with the use of a PRNG with low entropy. This issue was addressed with improved state management.

CVE-2020-6616: Jörn Tillmanns (@matedealer) and Jiska Classen (@naehrdine) of Secure Mobile Networking Lab

Bluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

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

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

CVE-2020-9853: Yu Wang of Didi Research America

Bluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

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 input validation.

CVE-2020-3907: Yu Wang of Didi Research America

CVE-2020-3908: Yu Wang of Didi Research America

CVE-2020-3912: Yu Wang of Didi Research America

CVE-2020-9779: Yu Wang of Didi Research America

Bluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

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

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

CVE-2020-3892: Yu Wang of Didi Research America

CVE-2020-3893: Yu Wang of Didi Research America

CVE-2020-3905: Yu Wang of Didi Research America

Bluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An application may be able to read restricted memory

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

CVE-2019-8853: Jianjun Dai of Qihoo 360 Alpha Lab

Call History

Available for: macOS Catalina 10.15.3

Impact: A malicious application may be able to access a user's call history

Description: This issue was addressed with a new entitlement.

CVE-2020-9776: Benjamin Randazzo (@____benjamin)

CoreBluetooth

Available for: macOS Catalina 10.15.3

Impact: A remote attacker may be able to leak sensitive user information

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

CVE-2020-9828: Jianjun Dai of Qihoo 360 Alpha Lab

CoreFoundation

Available for: macOS Catalina 10.15.3

Impact: A malicious application may be able to elevate privileges

Description: A permissions issue existed. This issue was addressed with improved permission validation.

CVE-2020-3913: Timo Christ of Avira Operations GmbH & Co. KG

CoreText

Available for: macOS Catalina 10.15.3

Impact: Processing a maliciously crafted text message may lead to application denial of service

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

CVE-2020-9829: Aaron Perris (@aaronp613), an anonymous researcher, an anonymous researcher, Carlos S Tech, Sam Menzies of Sam’s Lounge, Sufiyan Gouri of Lovely Professional University, India, Suleman Hasan Rathor of Arabic-Classroom.com

CUPS

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

Impact: An application may be able to gain elevated privileges

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

CVE-2020-3898: Stephan Zeisberg (github.com/stze) of Security Research Labs (srlabs.de)

FaceTime

Available for: macOS Catalina 10.15.3

Impact: A local user may be able to view sensitive user information

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

CVE-2020-3881: Yuval Ron, Amichai Shulman and Eli Biham of Technion - Israel Institute of Technology

Intel Graphics Driver

Available for: macOS Catalina 10.15.3

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

Description: A use after free issue was addressed with improved memory management.

CVE-2020-3886: Proteas

Intel Graphics Driver

Available for: macOS Catalina 10.15.3

Impact: A malicious application may disclose restricted memory

Description: An information disclosure issue was addressed with improved state management.

CVE-2019-14615: Wenjian HE of Hong Kong University of Science and Technology, Wei Zhang of Hong Kong University of Science and Technology, Sharad Sinha of Indian Institute of Technology Goa, and Sanjeev Das of University of North Carolina

IOHIDFamily

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

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

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

CVE-2020-3919: Alex Plaskett of F-Secure Consulting

IOThunderboltFamily

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An application may be able to gain elevated privileges

Description: A use after free issue was addressed with improved memory management.

CVE-2020-3851: Xiaolong Bai and Min (Spark) Zheng of Alibaba Inc. and Luyi Xing of Indiana University Bloomington

iTunes

Available for: macOS Catalina 10.15.3

Impact: A malicious application may be able to overwrite arbitrary files

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

CVE-2020-3896: Christoph Falta

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.3

Impact: An application may be able to read restricted memory

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

CVE-2020-3914: pattern-f (@pattern_F_) of WaCai

Kernel

Available for: macOS Catalina 10.15.3

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

Description: Multiple memory corruption issues were addressed with improved state management.

CVE-2020-9785: Proteas of Qihoo 360 Nirvan Team

libxml2

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.3

Impact: Multiple issues in libxml2

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

CVE-2020-3909: LGTM.com

CVE-2020-3911: found by OSS-Fuzz

libxml2

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.3

Impact: Multiple issues in libxml2

Description: A buffer overflow was addressed with improved size validation.

CVE-2020-3910: LGTM.com

Mail

Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15.3

Impact: A remote attacker may be able to cause arbitrary javascript code execution

Description: An injection issue was addressed with improved validation.

CVE-2020-3884: Apple

Printing

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.3

Impact: A malicious application may be able to overwrite arbitrary files

Description: A path handling issue was addressed with improved validation.

CVE-2020-3915: An anonymous researcher working with iDefense Labs (https://vcp.idefense.com/), HyungSeok Han (DaramG) @Theori working with TrendMicro’s Zero Day Initiative

Safari

Available for: macOS Catalina 10.15.3

Impact: A user's private browsing activity may be unexpectedly saved in Screen Time

Description: An issue existed in the handling of tabs displaying picture in picture video. The issue was corrected with improved state handling.

CVE-2020-9775: Andrian (@retroplasma), Marat Turaev, Marek Wawro (futurefinance.com) and Sambor Wawro of STO64 School Krakow Poland

Sandbox

Available for: macOS Catalina 10.15.3

Impact: A user may gain access to protected parts of the file system

Description: This issue was addressed with a new entitlement.

CVE-2020-9771: Csaba Fitzl (@theevilbit) of Offensive Security

Sandbox

Available for: macOS Catalina 10.15.3

Impact: A local user may be able to view sensitive user information

Description: An access issue was addressed with additional sandbox restrictions.

CVE-2020-3918: an anonymous researcher, Augusto Alvarez of Outcourse Limited

sudo

Available for: macOS Catalina 10.15.3

Impact: An attacker may be able to run commands as a non-existent user

Description: This issue was addressed by updating to sudo version 1.8.31.

CVE-2019-19232

sysdiagnose

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

Impact: An application may be able to trigger a sysdiagnose

Description: This issue was addressed with improved checks

CVE-2020-9786: Dayton Pidhirney (@_watbulb) of Seekintoo (@seekintoo)

TCC

Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.3

Impact: A maliciously crafted application may be able to bypass code signing enforcement

Description: A logic issue was addressed with improved restrictions.

CVE-2020-3906: Patrick Wardle of Jamf

Time Machine

Available for: macOS Catalina 10.15.3

Impact: A local user may be able to read arbitrary files

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

CVE-2020-3889: Lasse Trolle Borup of Danish Cyber Defence

Vim

Available for: macOS Catalina 10.15.3

Impact: Multiple issues in Vim

Description: Multiple issues were addressed by updating to version 8.1.1850.

CVE-2020-9769: Steve Hahn of LinkedIn

WebKit

Available for: macOS Catalina 10.15.3

Impact: Some websites may not have appeared in Safari Preferences

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9787: Ryan Pickren (ryanpickren.com)

WebKit

Available for: macOS Catalina 10.15.3

Impact: Processing maliciously crafted web content may lead to a cross site scripting attack

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

CVE-2020-3902: Yiğit Can YILMAZ (@yilmazcanyigit)

Additional recognition

CoreText

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

FireWire Audio

We would like to acknowledge Xiaolong Bai and Min (Spark) Zheng of Alibaba Inc. and Luyi Xing of Indiana University Bloomington for their assistance.

FontParser

We would like to acknowledge Matthew Denton of Google Chrome for their assistance.

Installer

We would like to acknowledge Pris Sears of Virginia Tech, Tom Lynch of UAL Creative Computing Institute, an anonymous researcher, an anonymous researcher for their assistance.

Install Framework Legacy

We would like to acknowledge Pris Sears of Virginia Tech, Tom Lynch of UAL Creative Computing Institute, and an anonymous researcher for their assistance.

LinkPresentation

We would like to acknowledge Travis for their assistance.

OpenSSH

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

rapportd

We would like to acknowledge Alexander Heinrich (@Sn0wfreeze) of Technische Universität Darmstadt for their assistance.

Sidecar

We would like to acknowledge Rick Backley (@rback_sec) for their assistance.

sudo

We would like to acknowledge Giorgio Oppo (linkedin.com/in/giorgio-oppo/) for their assistance.