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APPLE-SA-2020-12-14-3 macOS Big Sur 11.1, Security Update 2020-001
Catalina, Security Update 2020-007 Mojave

macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security
Update 2020-007 Mojave addresses the following issues. Information
about the security content is also available at
https://support.apple.com/HT212011.

AMD
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A malicious application may be able to execute arbitrary code
with system privileges
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2020-27914: Yu Wang of Didi Research America
CVE-2020-27915: Yu Wang of Didi Research America

App Store
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: An application may be able to gain elevated privileges
Description: This issue was addressed by removing the vulnerable
code.
CVE-2020-27903: Zhipeng Huo (@R3dF09) of Tencent Security Xuanwu Lab

AppleGraphicsControl
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A validation issue was addressed with improved logic.
CVE-2020-27941: shrek_wzw

AppleMobileFileIntegrity
Available for: macOS Big Sur 11.0.1
Impact: A malicious application may be able to bypass Privacy
preferences
Description: This issue was addressed with improved checks.
CVE-2020-29621: Wojciech Reguła (@_r3ggi) of SecuRing

Audio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
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-2020-27910: JunDong Xie and XingWei Lin of Ant Security Light-
Year Lab

Audio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A malicious application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2020-9943: JunDong Xie of Ant Security Light-Year Lab

Audio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: An application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2020-9944: JunDong Xie of Ant Security Light-Year Lab

Audio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted audio file may lead to
arbitrary code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-27916: JunDong Xie of Ant Security Light-Year Lab

Bluetooth
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A remote attacker may be able to cause unexpected application
termination or heap corruption
Description: Multiple integer overflows were addressed with improved
input validation.
CVE-2020-27906: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong
Security Lab

CoreAudio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
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-2020-27948: JunDong Xie of Ant Security Light-Year Lab

CoreAudio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
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-2020-9960: JunDong Xie and XingWei Lin of Ant Security Light-Year
Lab
CVE-2020-27908: JunDong Xie and XingWei Lin of Ant Security Light-
Year Lab

CoreAudio
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted audio file may lead to
arbitrary code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-10017: Francis working with Trend Micro Zero Day Initiative,
JunDong Xie of Ant Security Light-Year Lab

CoreText
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: A logic issue was addressed with improved state
management.
CVE-2020-27922: Mickey Jin of Trend Micro

FontParser
Available for: macOS Big Sur 11.0.1
Impact: Processing a maliciously crafted font may result in the
disclosure of process memory
Description: An information disclosure issue was addressed with
improved state management.
CVE-2020-27946: Mateusz Jurczyk of Google Project Zero

FontParser
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: A buffer overflow was addressed with improved size
validation.
CVE-2020-9962: Yiğit Can YILMAZ (@yilmazcanyigit)

FontParser
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-27952: an anonymous researcher, Mickey Jin and Junzhi Lu of
Trend Micro

FontParser
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-9956: Mickey Jin and Junzhi Lu of Trend Micro Mobile
Security Research Team working with Trend Micro’s Zero Day Initiative

FontParser
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: A memory corruption issue existed in the processing of
font files. This issue was addressed with improved input validation.
CVE-2020-27931: Apple
CVE-2020-27943: Mateusz Jurczyk of Google Project Zero
CVE-2020-27944: Mateusz Jurczyk of Google Project Zero

Foundation
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A local user may be able to read arbitrary files
Description: A logic issue was addressed with improved state
management.
CVE-2020-10002: James Hutchins

Graphics Drivers
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
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-2020-27947: ABC Research s.r.o. working with Trend Micro Zero Day
Initiative

Graphics Drivers
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
Impact: A malicious application may be able to execute arbitrary code
with system privileges
Description: An out-of-bounds write issue was addressed with improved
bounds checking.
CVE-2020-29612: ABC Research s.r.o. working with Trend Micro Zero Day
Initiative

HomeKit
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: An attacker in a privileged network position may be able to
unexpectedly alter application state
Description: This issue was addressed with improved setting
propagation.
CVE-2020-9978: Luyi Xing, Dongfang Zhao, and Xiaofeng Wang of Indiana
University Bloomington, Yan Jia of Xidian University and University
of Chinese Academy of Sciences, and Bin Yuan of HuaZhong University
of Science and Technology

Image Processing
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-27919: Hou JingYi (@hjy79425575) of Qihoo 360 CERT, Xingwei
Lin of Ant Security Light-Year Lab

ImageIO
Available for: macOS Big Sur 11.0.1
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2020-29616: zhouat working with Trend Micro Zero Day Initiative

ImageIO
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
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-2020-27924: Lei Sun
CVE-2020-29618: XingWei Lin of Ant Security Light-Year Lab

ImageIO
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
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-2020-29611: Ivan Fratric of Google Project Zero

ImageIO
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
Impact: Processing a maliciously crafted image may lead to heap
corruption
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-29617: XingWei Lin of Ant Security Light-Year Lab
CVE-2020-29619: XingWei Lin of Ant Security Light-Year Lab

ImageIO
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-27912: Xingwei Lin of Ant Security Light-Year Lab
CVE-2020-27923: Lei Sun

Intel Graphics Driver
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: An 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-2020-10015: ABC Research s.r.o. working with Trend Micro Zero Day
Initiative
CVE-2020-27897: Xiaolong Bai and Min (Spark) Zheng of Alibaba Inc.
and Luyi Xing of Indiana University Bloomington

Intel Graphics Driver
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
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-2020-27907: ABC Research s.r.o. working with Trend Micro Zero Day
Initiative

Kernel
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A malicious application may be able to determine kernel
memory layout
Description: A logic issue was addressed with improved state
management.
CVE-2020-9974: Tommy Muir (@Muirey03)

Kernel
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
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-2020-10016: Alex Helie

Kernel
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A remote attacker may be able to cause unexpected system
termination or corrupt kernel memory
Description: Multiple memory corruption issues were addressed with
improved input validation.
CVE-2020-9967: Alex Plaskett (@alexjplaskett)

Kernel
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
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-2020-9975: Tielei Wang of Pangu Lab

Kernel
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A race condition was addressed with improved state
handling.
CVE-2020-27921: Linus Henze (pinauten.de)

Kernel
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS
Big Sur 11.0.1
Impact: A malicious application may cause unexpected changes in
memory belonging to processes traced by DTrace
Description: This issue was addressed with improved checks to prevent
unauthorized actions.
CVE-2020-27949: Steffen Klee (@_kleest) of TU Darmstadt, Secure
Mobile Networking Lab

Kernel
Available for: macOS Big Sur 11.0.1
Impact: A malicious application may be able to elevate privileges
Description: This issue was addressed with improved entitlements.
CVE-2020-29620: Csaba Fitzl (@theevilbit) of Offensive Security

libxml2
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A remote attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: An integer overflow was addressed through improved input
validation.
CVE-2020-27911: found by OSS-Fuzz

libxml2
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing maliciously crafted web content may lead to code
execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2020-27920: found by OSS-Fuzz

libxml2
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2020-27926: found by OSS-Fuzz

libxpc
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A malicious application may be able to break out of its
sandbox
Description: A parsing issue in the handling of directory paths was
addressed with improved path validation.
CVE-2020-10014: Zhipeng Huo (@R3dF09) of Tencent Security Xuanwu Lab

Logging
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A local attacker may be able to elevate their privileges
Description: A path handling issue was addressed with improved
validation.
CVE-2020-10010: Tommy Muir (@Muirey03)

Model I/O
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted USD file may lead to
unexpected application termination or arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-13524: Aleksandar Nikolic of Cisco Talos

Model I/O
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Opening a maliciously crafted file may lead to unexpected
application termination or arbitrary code execution
Description: A logic issue was addressed with improved state
management.
CVE-2020-10004: Aleksandar Nikolic of Cisco Talos

NSRemoteView
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A sandboxed process may be able to circumvent sandbox
restrictions
Description: A logic issue was addressed with improved restrictions.
CVE-2020-27901: Thijs Alkemade of Computest Research Division

Power Management
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A malicious application may be able to determine kernel
memory layout
Description: A logic issue was addressed with improved state
management.
CVE-2020-10007: singi@theori working with Trend Micro Zero Day
Initiative

Quick Look
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: Processing a maliciously crafted document may lead to a cross
site scripting attack
Description: An access issue was addressed with improved access
restrictions.
CVE-2020-10012: Heige of KnownSec 404 Team (knownsec.com) and Bo Qu
of Palo Alto Networks (paloaltonetworks.com)

Ruby
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A remote attacker may be able to modify the file system
Description: A path handling issue was addressed with improved
validation.
CVE-2020-27896: an anonymous researcher

System Preferences
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A sandboxed process may be able to circumvent sandbox
restrictions
Description: A logic issue was addressed with improved state
management.
CVE-2020-10009: Thijs Alkemade of Computest Research Division

WebRTC
Available for: macOS Big Sur 11.0.1
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2020-15969: an anonymous researcher

Wi-Fi
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: An attacker may be able to bypass Managed Frame Protection
Description: A denial of service issue was addressed with improved
state handling.
CVE-2020-27898: Stephan Marais of University of Johannesburg

Installation note:

macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security
Update 2020-007 Mojave may be obtained from the Mac App Store or
Apple's Software Downloads web site:
https://support.apple.com/downloads/

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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