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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Apple security documents reference vulnerabilities by CVE-ID when possible.
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macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra
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
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
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
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
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
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
CoreCapture
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 use after free issue was addressed with improved memory management.
CVE-2020-9949: Proteas
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)
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: an anonymous researcher, Mickey Jin of Trend Micro
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: Cees Elzinga, Zhongcheng Li (CK01) from Zero-dayits Team of Legendsec at Qi'anxin Group
FontParser
Available for: macOS Catalina 10.15.5
Impact: Processing a maliciously crafted font file may lead to arbitrary code execution
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2020-9980: Xingwei Lin of Ant Security Light-Year Lab
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.
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: A memory corruption issue was addressed with improved input validation.
CVE-2020-27933: Xingwei Lin of Ant-Financial Light-Year Security Lab
ImageIO
Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5
Impact: Multiple buffer overflow issues existed in openEXR
Description: Multiple issues in openEXR were addressed with improved checks.
CVE-2020-11758: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11759: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11760: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11761: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11762: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11763: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11764: Xingwei Lin of Ant-Financial Light-Year Security Lab
CVE-2020-11765: Xingwei Lin of Ant-Financial Light-Year Security Lab
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
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
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
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
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
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
ImageIO
Available for: macOS Mojave 10.14.6, 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 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
CVE-2020-9984: an anonymous researcher
Image Processing
Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5
Impact: Viewing a maliciously crafted JPEG file may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved input validation.
CVE-2020-9887: Mickey Jin of Trend Micro
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) working with Trend Micro’s Zero Day Initiative
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 kernel privileges
Description: A race condition was addressed with additional validation.
CVE-2020-9990: ABC Research s.r.l. working with Trend Micro Zero Day Initiative, ABC Research s.r.o. working with Trend Micro Zero Day Initiative
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
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
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
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
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
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
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
Kernel
Available for: macOS Catalina 10.15.5
Impact: A malicious application may disclose restricted memory
Description: An information disclosure issue was addressed with improved state management.
CVE-2020-9997: Catalin Valeriu Lita of SecurityScorecard
libxml2
Available for: macOS Catalina 10.15.5
Impact: Processing maliciously crafted XML may lead to an unexpected application termination or arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
CVE-2020-9926: Found by OSS-Fuzz
libxpc
Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6
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
Login Window
Available for: macOS Catalina 10.15.5
Impact: A user may be unexpectedly logged in to another user’s account
Description: A logic issue was addressed with improved state management.
CVE-2020-9935: an anonymous researcher
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
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
Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5
Impact: Processing a maliciously crafted email may lead to writing arbitrary files
Description: A logic issue was addressed with improved state management.
CVE-2020-9922: Mikko Kenttälä (@Turmio_) of SensorFu
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, 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 was addressed with improved bounds checking.
CVE-2020-9880: Holger Fuhrmannek of Deutsche Telekom Security
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: Aleksandar Nikolic of Cisco Talos, Holger Fuhrmannek of Deutsche Telekom Security
CVE-2020-9881: Holger Fuhrmannek of Deutsche Telekom Security
CVE-2020-9882: Holger Fuhrmannek of Deutsche Telekom Security
CVE-2020-9940: Holger Fuhrmannek of Deutsche Telekom Security
CVE-2020-9985: Holger Fuhrmannek of Deutsche Telekom Security
OpenLDAP
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: This issue was addressed with improved checks.
CVE-2020-12243
Perl
Available for: macOS Catalina 10.15.5
Impact: An integer overflow in the Perl regular expression compiler may allow a remote attacker to insert instructions into the compiled form of a regular expression
Description: This issue was addressed with improved checks.
CVE-2020-10878: Hugo van der Sanden and Slaven Rezic
Perl
Available for: macOS Catalina 10.15.5
Impact: A remote attacker may be able to cause arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2020-12723: Sergey Aleynikov
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
Sandbox
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: An out-of-bounds read was addressed with improved input validation.
CVE-2020-9930: Zhiyi Zhang from Codesafe Team of Legendsec at Qi'anxin Group
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
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
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)
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: Tim Michaud (@TimGMichaud) of Leviathan, Zhongcheng Li (CK01) from Zero-dayits Team of Legendsec at Qi'anxin Group
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
WebDAV
Available for: macOS Mojave 10.14.6, macOS High Sierra 10.13.6, macOS Catalina 10.15.5
Impact: A sandboxed process may be able to circumvent sandbox restrictions
Description: This issue was addressed with improved entitlements.
CVE-2020-9898: Sreejith Krishnan R (@skr0x1C0)
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
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
Additional recognition
CoreFoundation
We would like to acknowledge Bobby Pelletier for their assistance.
ImageIO
We would like to acknowledge Xingwei Lin of Ant-Financial Light-Year Security Lab for their assistance.
Siri
We would like to acknowledge Yuval Ron, Amichai Shulman, and Eli Biham of the Technion - Israel Institute of Technology for their assistance.
USB Audio
We would like to acknowledge Andy Davis of NCC Group for their assistance.
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