About the security content of macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra

This document describes the security content of macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra.

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macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra

Released July 15, 2020

AMD

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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-2020-9927: Lilang Wu working with TrendMicro’s Zero Day Initiative

Entry updated August 5, 2020

Audio

Available for: macOS Catalina 10.15.5

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

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

CVE-2020-9884: Yu Zhou(@yuzhou6666) of 小鸡帮 working with Trend Micro Zero Day Initiative

CVE-2020-9889: Anonymous working with Trend Micro’s Zero Day Initiative, JunDong Xie and XingWei Lin of Ant-financial Light-Year Security Lab

Entry updated August 5, 2020

Audio

Available for: macOS Catalina 10.15.5

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-2020-9888: JunDong Xie and XingWei Lin of Ant-financial Light-Year Security Lab

CVE-2020-9890: JunDong Xie and XingWei Lin of Ant-financial Light-Year Security Lab

CVE-2020-9891: JunDong Xie and XingWei Lin of Ant-financial Light-Year Security Lab

Entry updated August 5, 2020

Bluetooth

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9928: Yu Wang of Didi Research America

Entry added August 5, 2020

Bluetooth

Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.5

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

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

CVE-2020-9929: Yu Wang of Didi Research America

Entry added August 5, 2020

Clang

Available for: macOS Catalina 10.15.5

Impact: Clang may generate machine code that does not correctly enforce pointer authentication codes

Description: A logic issue was addressed with improved validation.

CVE-2020-9870: Samuel Groß of Google Project Zero

CoreAudio

Available for: macOS High Sierra 10.13.6

Impact: A buffer overflow may result in arbitrary code execution

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

CVE-2020-9866: Yu Zhou of 小鸡帮 and Jundong Xie of Ant-financial Light-Year Security Lab

Core Bluetooth

Available for: macOS Catalina 10.15.5

Impact: A remote attacker may cause an unexpected application termination

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

CVE-2020-9869: Patrick Wardle of Jamf

Entry added August 5, 2020

CoreFoundation

Available for: macOS Catalina 10.15.5

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

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

CVE-2020-9934: Matt Shockley (linkedin.com/in/shocktop)

Entry updated August 5, 2020

CoreGraphics

Available for: macOS Catalina 10.15.5

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

Description: A buffer overflow issue was addressed with improved memory handling.

CVE-2020-9883: Mickey Jin of Trend Micro

Entry added July 24, 2020

Crash Reporter

Available for: macOS Catalina 10.15.5

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

Description: A memory corruption issue was addressed by removing the vulnerable code.

CVE-2020-9865: Zhuo Liang of Qihoo 360 Vulcan Team working with 360 BugCloud

Crash Reporter

Available for: macOS Catalina 10.15.5

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

Description: An issue existed within the path validation logic for symlinks. This issue was addressed with improved path sanitization.

CVE-2020-9900: Zhongcheng Li (CK01) from Zero-dayits Team of Legendsec at Qi'anxin Group

Entry added August 5, 2020

Graphics Drivers

Available for: macOS Catalina 10.15.5

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

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

CVE-2020-9799: ABC Research s.r.o.

Entry updated July 24, 2020

Heimdal

Available for: macOS Catalina 10.15.5

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

Description: This issue was addressed with improved data protection.

CVE-2020-9913: Cody Thomas of SpecterOps

ImageIO

Available for: macOS Catalina 10.15.5

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-2020-9871: Xingwei Lin of Ant-financial Light-Year Security Lab

CVE-2020-9872: Xingwei Lin of Ant-financial Light-Year Security Lab

CVE-2020-9874: Xingwei Lin of Ant-financial Light-Year Security Lab

CVE-2020-9879: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9936: Mickey Jin of Trend Micro

CVE-2020-9937: Xingwei Lin of Ant-Financial Light-Year Security Lab

Entry updated August 5, 2020

ImageIO

Available for: macOS Catalina 10.15.5

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

Description: A buffer overflow issue was addressed with improved memory handling.

CVE-2020-9919: Mickey Jin of Trend Micro

Entry added July 24, 2020

ImageIO

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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-2020-9876: Mickey Jin of Trend Micro

Entry added July 24, 2020

ImageIO

Available for: macOS Catalina 10.15.5

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-2020-9873: Xingwei Lin of Ant-financial Light-Year Security Lab

CVE-2020-9938: Xingwei Lin of Ant-financial Light-Year Security Lab

Entry added July 24, 2020

ImageIO

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9877: Xingwei Lin of Ant-financial Light-Year Security Lab

Entry added August 5, 2020

ImageIO

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9875: Mickey Jin of Trend Micro

Entry added August 5, 2020

Intel Graphics Driver

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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-2020-9908:  Junzhi Lu(@pwn0rz) of Trend Micro

Entry added July 24, 2020

Intel Graphics Driver

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9921: ABC Research s.r.o. working with Trend Micro Zero Day Initiative

Entry added August 5, 2020

Kernel

Available for: macOS Catalina 10.15.5

Impact: An attacker in a privileged network position may be able to inject into active connections within a VPN tunnel

Description: A routing issue was addressed with improved restrictions.

CVE-2019-14899: William J. Tolley, Beau Kujath, and Jedidiah R. Crandall

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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-2020-9904: Tielei Wang of Pangu Lab

Entry added July 24, 2020

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9924: Matt DeVore of Google

Entry added July 24, 2020

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9892: Andy Nguyen of Google

Entry added July 24, 2020

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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

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

CVE-2020-9863: Xinru Chi of Pangu Lab

Entry updated August 5, 2020

Kernel

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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-2020-9902: Xinru Chi and Tielei Wang of Pangu Lab

Entry added August 5, 2020

Kernel

Available for: macOS Catalina 10.15.5

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

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

CVE-2020-9905: Raz Mashat (@RazMashat) of ZecOps

Entry added August 5, 2020

Mail

Available for: macOS Catalina 10.15.5

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

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

CVE-2019-19906

Entry updated July 24, 2020

Mail

Available for: macOS Catalina 10.15.5

Impact: A malicious mail server may overwrite arbitrary mail files

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

CVE-2020-9920: YongYue Wang AKA BigChan of Hillstone Networks AF Team

Entry added July 24, 2020

Messages

Available for: macOS Catalina 10.15.5

Impact: A user that is removed from an iMessage group could rejoin the group

Description: An issue existed in the handling of iMessage tapbacks. The issue was resolved with additional verification.

CVE-2020-9885: an anonymous researcher, Suryansh Mansharamani, of WWP High School North (medium.com/@suryanshmansha)

Model I/O

Available for: macOS Catalina 10.15.5

Impact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution

Description: A buffer overflow issue was addressed with improved memory handling.

CVE-2020-9878: Holger Fuhrmannek of Deutsche Telekom Security

Model I/O

Available for: macOS Mojave 10.14.6

Impact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution

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

CVE-2020-9880: Holger Fuhrmannek of Deutsche Telekom Security

Entry added July 24, 2020

Model I/O

Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.5

Impact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution

Description: A buffer overflow issue was addressed with improved memory handling.

CVE-2020-9878: Holger Fuhrmannek of Deutsche Telekom Security

CVE-2020-9881: Holger Fuhrmannek of Deutsche Telekom Security

CVE-2020-9882: Holger Fuhrmannek of Deutsche Telekom Security

Entry added July 24, 2020

rsync

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6

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

Entry added July 24, 2020

Sandbox

Available for: macOS Catalina 10.15.5

Impact: A local user may be able to load unsigned kernel extensions

Description: This issue was addressed with improved checks.

CVE-2020-9939: @jinmo123, @setuid0x0_, and @insu_yun_en of @SSLab_Gatech working with Trend Micro’s Zero Day Initiative

Entry added August 5, 2020

Security

Available for: macOS Catalina 10.15.5

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

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9864: Alexander Holodny

Security

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

Impact: An attacker may have been able to impersonate a trusted website using shared key material for an administrator added certificate

Description: A certificate validation issue existed when processing administrator added certificates. This issue was addressed with improved certificate validation.

CVE-2020-9868: Brian Wolff of Asana

Entry added July 24, 2020

Security

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 logic issue was addressed with improved validation.

CVE-2020-9854: Ilias Morad (A2nkF)

Entry added July 24, 2020

sysdiagnose

Available for: macOS Catalina 10.15.5

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

Description: An issue existed within the path validation logic for symlinks. This issue was addressed with improved path sanitization.

CVE-2020-9901: Zhongcheng Li (CK01) from Zero-dayits Team of Legendsec at Qi'anxin Group

Entry added August 5, 2020

Vim

Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6

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

Description: This issue was addressed with improved checks.

CVE-2019-20807: Guilherme de Almeida Suckevicz

Wi-Fi

Available for: macOS Catalina 10.15.5

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

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

CVE-2020-9918: Jianjun Dai of 360 Alpha Lab working with 360 BugCloud (bugcloud.360.cn)

Wi-Fi

Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5

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-2020-9899: Yu Wang of Didi Research America

Entry added July 24, 2020

Wi-Fi

Available for: macOS Catalina 10.15.5

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

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

CVE-2020-9906: Ian Beer of Google Project Zero

Entry added July 24, 2020

Additional recognition

Siri

We would like to acknowledge Yuval Ron, Amichai Shulman, and Eli Biham of the Technion - Israel Institute of Technology for their assistance.

Entry added August 5, 2020

USB Audio

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

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