About the security content of macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra

This document describes the security content of macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 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 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra

Accounts

Available for: macOS Catalina 10.15.4

Impact: A remote attacker may be able to cause a denial of service

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

CVE-2020-9827: Jannik Lorenz of SEEMOO @ TU Darmstadt

Accounts

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

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

AirDrop

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: A remote attacker may be able to cause a denial of service

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

CVE-2020-9826: Dor Hadad of Palo Alto Networks

AppleMobileFileIntegrity

Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15.4

Impact: A malicious application could interact with system processes to access private information and perform privileged actions

Description: An entitlement parsing issue was addressed with improved parsing.

CVE-2020-9842: Linus Henze (pinauten.de)

AppleUSBNetworking

Available for: macOS Catalina 10.15.4

Impact: Inserting a USB device that sends invalid messages may cause a kernel panic

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9804: Andy Davis of NCC Group

Audio

Available for: macOS Catalina 10.15.4

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

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

CVE-2020-9815: Yu Zhou (@yuzhou6666) working with Trend Micro Zero Day Initiative

Audio

Available for: macOS Catalina 10.15.4

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

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

CVE-2020-9791: Yu Zhou (@yuzhou6666) working with Trend Micro Zero Day Initiative

Bluetooth

Available for: macOS Catalina 10.15.4

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

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

CVE-2020-9831: Yu Wang of Didi Research America

Bluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

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 input validation.

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

Calendar

Available for: macOS Catalina 10.15.4

Impact: Importing a maliciously crafted calendar invitation may exfiltrate user information

Description: This issue was addressed with improved checks.

CVE-2020-3882: Andy Grant of NCC Group

CoreBluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

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

CVMS

Available for: macOS Catalina 10.15.4

Impact: An application may be able to gain elevated privileges

Description: This issue was addressed with improved checks.

CVE-2020-9856: @jinmo123, @setuid0x0_, and @insu_yun_en of @SSLab_Gatech working with Trend Micro’s Zero Day Initiative

DiskArbitration

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.4

Impact: A malicious application may be able to break out of its sandbox

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

CVE-2020-9847: Zhuo Liang of Qihoo 360 Vulcan Team working with 360 BugCloud (bugcloud.360.cn)

Find My

Available for: macOS Catalina 10.15.4

Impact: A local attacker may be able to elevate their privileges

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

CVE-2020-9855: Zhongcheng Li(CK01) of Topsec Alpha Team

FontParser

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution

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

CVE-2020-9816: Peter Nguyen Vu Hoang of STAR Labs working with Trend Micro Zero Day Initiative

ImageIO

Available for: macOS Catalina 10.15.4

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

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

CVE-2020-3878: Samuel Groß of Google Project Zero

ImageIO

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9789: Wenchao Li of VARAS@IIE

CVE-2020-9790: Xingwei Lin of Ant-financial Light-Year Security Lab

Intel Graphics Driver

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9822: ABC Research s.r.o

Intel Graphics Driver

Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

Description: A race condition was addressed with improved state handling.

CVE-2020-9796: ABC Research s.r.o.

IPSec

Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15.4

Impact: A remote attacker may be able to leak memory

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

CVE-2020-9837: Thijs Alkemade of Computest

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9821: Xinru Chi and Tielei Wang of Pangu Lab

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: A malicious application may be able to determine another application's memory layout

Description: An information disclosure issue was addressed by removing the vulnerable code.

CVE-2020-9797: an anonymous researcher

Kernel

Available for: macOS Catalina 10.15.4

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

Description: An integer overflow was addressed with improved input validation.

CVE-2020-9852: Tao Huang and Tielei Wang of Pangu Lab

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9795: Zhuo Liang of Qihoo 360 Vulcan Team

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: An application may be able to cause unexpected system termination or write kernel memory

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

CVE-2020-9808: Xinru Chi and Tielei Wang of Pangu Lab

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.4

Impact: A local user may be able to read kernel memory

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

CVE-2020-9811: Tielei Wang of Pangu Lab

CVE-2020-9812: derrek (@derrekr6)

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

Description: A logic issue existed resulting in memory corruption. This was addressed with improved state management.

CVE-2020-9813: Xinru Chi of Pangu Lab

CVE-2020-9814: Xinru Chi and Tielei Wang of Pangu Lab

Kernel

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9809: Benjamin Randazzo (@____benjamin)

ksh

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: A local user may be able to execute arbitrary shell commands

Description: An issue existed in the handling of environment variables. This issue was addressed with improved validation.

CVE-2019-14868

libxpc

Available for: macOS Catalina 10.15.4

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

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

CVE-2020-9994: Apple

NSURL

Available for: macOS Mojave 10.14.6

Impact: A malicious website may be able to exfiltrate autofilled data in Safari

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

CVE-2020-9857: Dlive of Tencent Security Xuanwu Lab

PackageKit

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9817: Andy Grant of NCC Group

PackageKit

Available for: macOS Catalina 10.15.4

Impact: A malicious application may be able to modify protected parts of the file system

Description: An access issue was addressed with improved access restrictions.

CVE-2020-9851: an anonymous researcher, Linus Henze (pinauten.de)

Python

Available for: macOS Catalina 10.15.4

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

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

CVE-2020-9793

rsync

Available for: macOS Catalina 10.15.4

Impact: A remote attacker may be able to overwrite existing files

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

CVE-2014-9512: gaojianfeng

Sandbox

Available for: macOS Catalina 10.15.4

Impact: A malicious application may be able to bypass Privacy preferences

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

CVE-2020-9825: Sreejith Krishnan R (@skr0x1C0)

Sandbox

Available for: macOS Mojave 10.14.6

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

Security

Available for: macOS Catalina 10.15.4

Impact: A file may be incorrectly rendered to execute JavaScript

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

CVE-2020-9788: Wojciech Reguła of SecuRing (wojciechregula.blog)

Security

Available for: macOS Catalina 10.15.4

Impact: An application may be able to gain elevated privileges

Description: A logic issue was addressed with improved validation.

CVE-2020-9854: Ilias Morad (A2nkF)

SIP

Available for: macOS Catalina 10.15.4

Impact: A non-privileged user may be able to modify restricted network settings

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9824: @jamestraynor, Csaba Fitzl (@theevilbit) of Offensive Security

Software Update

Available for: macOS Catalina 10.15.4

Impact: A person with physical access to a Mac may be able to bypass Login Window

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9810: Francis @francisschmaltz

SQLite

Available for: macOS Catalina 10.15.4

Impact: A malicious application may cause a denial of service or potentially disclose memory contents

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

CVE-2020-9794

System Preferences

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: An application may be able to gain elevated privileges

Description: A race condition was addressed with improved state handling.

CVE-2020-9839: @jinmo123, @setuid0x0_, and @insu_yun_en of @SSLab_Gatech working with Trend Micro’s Zero Day Initiative

USB Audio

Available for: macOS Catalina 10.15.4

Impact: A USB device may be able to cause a denial of service

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

CVE-2020-9792: Andy Davis of NCC Group

Wi-Fi

Available for: macOS Catalina 10.15.4

Impact: A remote attacker may be able to cause unexpected system termination or corrupt kernel memory

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

CVE-2020-9844: Ian Beer of Google Project Zero

Wi-Fi

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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-2020-9830: Tielei Wang of Pangu Lab

Wi-Fi

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9834: Yu Wang of Didi Research America

Wi-Fi

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: A local user may be able to read kernel memory

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

CVE-2020-9833: Yu Wang of Didi Research America

Wi-Fi

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

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

CVE-2020-9832: Yu Wang of Didi Research America

WindowServer

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

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

Description: An integer overflow was addressed with improved input validation.

CVE-2020-9841: ABC Research s.r.o. working with Trend Micro Zero Day Initiative

zsh

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4

Impact: A local attacker may be able to elevate their privileges

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

CVE-2019-20044: Sam Foxman

Additional recognition

CoreBluetooth

We would like to acknowledge Maximilian von Tschirschnitz (@maxinfosec1) of Technical University Munich and Ludwig Peuckert of Technical University Munich for their assistance.

CoreText

We would like to acknowledge Jiska Classen (@naehrdine) and Dennis Heinze (@ttdennis) of Secure Mobile Networking Lab for their assistance.

Endpoint Security

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

ImageIO

We would like to acknowledge Lei Sun for their assistance.

IOHIDFamily

We would like to acknowledge Andy Davis of NCC Group for their assistance.

IPSec

We would like to acknowledge Thijs Alkemade of Computest for their assistance.

Login Window

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

Sandbox

We would like to acknowledge Jason L Lang of Optum for their assistance.

Spotlight

We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive Security for their assistance.