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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.
Update Catalina 10.15.7
Apple security documents reference vulnerabilities by CVE-ID when possible.
For more information about security, see the Apple Product Security page.
macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave
Released February 1, 2021
Analytics
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: A remote attacker may be able to cause a denial of service
Description: This issue was addressed with improved checks.
CVE-2021-1761: Cees Elzinga
Update Catalina Mac
APFS
Available for: macOS Big Sur 11.0.1
Impact: A local user may be able to read arbitrary files
Description: The issue was addressed with improved permissions logic. Install grammarly for word mac.
CVE-2021-1797: Thomas Tempelmann
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CFNetwork Cache
Available for: macOS Catalina 10.15.7 and macOS Mojave 10.14.6
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: An integer overflow was addressed with improved input validation.
CVE-2020-27945: Zhuo Liang of Qihoo 360 Vulcan Team
CoreAnimation
Available for: macOS Big Sur 11.0.1
Impact: A malicious application could execute arbitrary code leading to compromise of user information
Description: A memory corruption issue was addressed with improved state management.
CVE-2021-1760: @S0rryMybad of 360 Vulcan Team
CoreAudio
Available for: macOS Big Sur 11.0.1
Impact: Processing maliciously crafted web content may lead to code execution
Description: An out-of-bounds write was addressed with improved input validation.
CVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab
CoreGraphics
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: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2021-1776: Ivan Fratric of Google Project Zero
Entry updated March 16, 2021
CoreMedia
Available for: 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-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT
CoreText
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS Big Sur 11.0.1
Impact: Processing a maliciously crafted text file may lead to arbitrary code execution
Description: A stack overflow was addressed with improved input validation.
CVE-2021-1772: Mickey Jin (@patch1t) of Trend Micro working with Trend Micro’s Zero Day Initiative
Entry updated March 16, 2021
CoreText
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS Big Sur 11.0.1
Impact: A remote attacker may be able to cause arbitrary code execution
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2021-1792: Mickey Jin & Junzhi Lu of Trend Micro working with Trend Micro’s Zero Day Initiative
Entry updated March 16, 2021
Crash Reporter
Available for: macOS Catalina 10.15.7
Impact: A remote attacker may be able to cause a denial of service
Description: This issue was addressed with improved checks.
CVE-2021-1761: Cees Elzinga
Crash Reporter
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: A local attacker may be able to elevate their privileges
Description: Multiple issues were addressed with improved logic.
CVE-2021-1787: James Hutchins
Crash Reporter
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: A local user may be able to create or modify system files
Description: A logic issue was addressed with improved state management.
CVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security
Directory Utility
Available for: macOS Catalina 10.15.7
Impact: A malicious application may be able to access private information
Description: A logic issue was addressed with improved state management.
CVE-2020-27937: Wojciech Reguła (@_r3ggi) of SecuRing
Endpoint Security
Available for: macOS Catalina 10.15.7
Impact: A local attacker may be able to elevate their privileges
Description: A logic issue was addressed with improved state management.
CVE-2021-1802: Zhongcheng Li (@CK01) of WPS Security Response Center
FairPlay
Available for: macOS Big Sur 11.0.1
Impact: A malicious application may be able to disclose kernel memory
Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.
CVE-2021-1791: Junzhi Lu (@pwn0rz), Qi Sun & Mickey Jin of Trend Micro working with Trend Micro’s Zero Day Initiative
FontParser
Available for: macOS Catalina 10.15.7
Impact: Processing a maliciously crafted font may lead to arbitrary code execution
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2021-1790: Peter Nguyen Vu Hoang of STAR Labs
FontParser
Available for: macOS Mojave 10.14.6
Impact: Processing a maliciously crafted font may lead to arbitrary code execution
Description: This issue was addressed by removing the vulnerable code.
CVE-2021-1775: Mickey Jin and Qi Sun of Trend Micro working with Trend Micro’s Zero Day Initiative
Entry updated March 16, 2021
FontParser
Available for: macOS Mojave 10.14.6
Impact: A remote attacker may be able to leak memory
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2020-29608: Xingwei Lin of Ant Security Light-Year Lab
FontParser
Available for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7
Impact: A remote attacker may be able to cause arbitrary code execution
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2021-1758: Peter Nguyen of STAR Labs
ImageIO
Available for: macOS Big Sur 11.0.1
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: An access issue was addressed with improved memory management.
CVE-2021-1783: 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: An out-of-bounds read was addressed with improved bounds checking.
CVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1743: Mickey Jin & Junzhi Lu of Trend Micro working with Trend Micro’s Zero Day Initiative, 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 a denial of service
Description: A logic issue was addressed with improved state management.
CVE-2021-1773: 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 a denial of service
Description: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.
CVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab
ImageIO
Available for: 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-2021-1736: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab
Entry updated March 16, 2021
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 a denial of service
Description: This issue was addressed with improved checks.
CVE-2021-1766: Danny Rosseau of Carve Systems
Entry updated March 16, 2021
ImageIO
Available for: macOS Catalina 10.15.7, macOS Big Sur 11.0.1
Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution
Description: A logic issue was addressed with improved state management.
CVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab
Entry updated March 16, 2021
ImageIO
Available for: macOS Catalina 10.15.7, macOS Big Sur 11.0.1
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2021-1742: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1746: Jeonghoon Shin(@singi21a) of THEORI, Mickey Jin & Qi Sun of Trend Micro working with Trend Micro’s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1754: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1774: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1777: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab
Entry updated March 16, 2021
ImageIO
Available for: macOS Big Sur 11.0.1 and 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-2021-1737: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-1738: Lei Sun
CVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab
IOKit
Available for: macOS Big Sur 11.0.1
Impact: An application may be able to execute arbitrary code with system privileges
Description: A logic error in kext loading was addressed with improved state handling.
CVE-2021-1779: Csaba Fitzl (@theevilbit) of Offensive Security
IOSkywalkFamily
Available for: macOS Big Sur 11.0.1
Impact: A local attacker may be able to elevate their privileges
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2021-1757: Pan ZhenPeng (@Peterpan0927) of Alibaba Security, Proteas
Kernel
Available for: macOS Catalina 10.15.7 and macOS Mojave 10.14.6
Impact: An 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-2020-27904: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab
Kernel
Available for: macOS Big Sur 11.0.1
Impact: A remote attacker may be able to cause a denial of service
Description: A use after free issue was addressed with improved memory management.
CVE-2021-1764: @m00nbsd
Kernel
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.
Description: A race condition was addressed with improved locking.
CVE-2021-1782: an anonymous researcher
Kernel
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: Multiple issues were addressed with improved logic.
CVE-2021-1750: @0xalsr
Login Window
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: An attacker in a privileged network position may be able to bypass authentication policy
Description: An authentication issue was addressed with improved state management.
CVE-2020-29633: Jewel Lambert of Original Spin, LLC.
Messages
Available for: macOS Big Sur 11.0.1
Impact: A malicious application may be able to leak sensitive user information
Description: A privacy issue existed in the handling of Contact cards. This was addressed with improved state management.
CVE-2021-1781: Csaba Fitzl (@theevilbit) of Offensive Security
Entry added March 16, 2021
Messages
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: A user that is removed from an iMessage group could rejoin the group
Description: This issue was addressed with improved checks.
CVE-2021-1771: Shreyas Ranganatha (@strawsnoceans)
Model I/O
Available for: macOS Big Sur 11.0.1
Impact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution
Description: An out-of-bounds write was addressed with improved input validation.
CVE-2021-1762: Mickey Jin of Trend Micro working with Trend Micro’s Zero Day Initiative
Entry updated March 16, 2021
Model I/O
Available for: macOS Catalina 10.15.7
Impact: Processing a maliciously crafted file may lead to heap corruption
Description: This issue was addressed with improved checks.
CVE-2020-29614: ZhiWei Sun (@5n1p3r0010) of Topsec Alpha Lab
Model I/O
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and 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-2021-1763: Mickey Jin of Trend Micro working with Trend Micro’s Zero Day Initiative
Model I/O
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: Processing a maliciously crafted image may lead to heap corruption
Description: This issue was addressed with improved checks.
CVE-2021-1767: Mickey Jin & Junzhi Lu of Trend Micro working with Trend Micro’s Zero Day Initiative
Model I/O
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution
Update Catalina 10.15.5
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2021-1745: Mickey Jin & Junzhi Lu of Trend Micro working with Trend Micro’s Zero Day Initiative
Model I/O
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
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-2021-1753: Mickey Jin of Trend Micro working with Trend Micro’s Zero Day Initiative
Model I/O
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
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 bounds checking.
CVE-2021-1768: Mickey Jin & Junzhi Lu of Trend Micro working with Trend Micro’s Zero Day Initiative
NetFSFramework
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: Mounting a maliciously crafted Samba network share may lead to arbitrary code execution
Description: A logic issue was addressed with improved state management.
CVE-2021-1751: Mikko Kenttälä (@Turmio_) of SensorFu
OpenLDAP
Available for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6
Impact: A remote attacker may be able to cause a denial of service
Description: This issue was addressed with improved checks.
CVE-2020-25709
Power Management
Available for: macOS Mojave 10.14.6, macOS Catalina 10.15.7
Impact: A malicious application may be able to elevate privileges
Description: A logic issue was addressed with improved state management.
CVE-2020-27938: Tim Michaud (@TimGMichaud) of Leviathan
Screen Sharing
Available for: macOS Big Sur 11.0.1
Impact: Multiple issues in pcre
Description: Multiple issues were addressed by updating to version 8.44.
CVE-2019-20838
CVE-2020-14155
SQLite
Available for: macOS Catalina 10.15.7
Impact: Multiple issues in SQLite
Description: Multiple issues were addressed with improved checks.
CVE-2020-15358
Swift
Available for: macOS Big Sur 11.0.1
Impact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication
Description: A logic issue was addressed with improved validation.
CVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs
WebKit
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-2021-1788: Francisco Alonso (@revskills)
WebKit
Available for: macOS Big Sur 11.0.1
Impact: Maliciously crafted web content may violate iframe sandboxing policy
Description: This issue was addressed with improved iframe sandbox enforcement.
CVE-2021-1765: Eliya Stein of Confiant
CVE-2021-1801: Eliya Stein of Confiant
WebKit
Available for: macOS Big Sur 11.0.1
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A type confusion issue was addressed with improved state handling.
CVE-2021-1789: @S0rryMybad of 360 Vulcan Team
WebKit
Available for: macOS Big Sur 11.0.1
Impact: A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Description: A logic issue was addressed with improved restrictions.
CVE-2021-1871: an anonymous researcher
CVE-2021-1870: an anonymous researcher
WebRTC
Available for: macOS Big Sur 11.0.1
Impact: A malicious website may be able to access restricted ports on arbitrary servers
Description: A port redirection issue was addressed with additional port validation.
CVE-2021-1799: Gregory Vishnepolsky & Ben Seri of Armis Security, and Samy Kamkar
Additional recognition
Kernel
We would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin & Jesse Change of Trend Micro for their assistance.
libpthread
We would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.
Login Window
We would like to acknowledge Jose Moises Romero-Villanueva of CrySolve for their assistance.
Mail Drafts
We would like to acknowledge Jon Bottarini of HackerOne for their assistance.
Screen Sharing Server
We would like to acknowledge @gorelics for their assistance.
WebRTC
We would like to acknowledge Philipp Hancke for their assistance.