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GeezerVison is showing support.apple.com — About the security content of watchOS 7.3 - Apple Support About the security content of watchOS 7.3This document describes the security content of watchOS 7.3. About Apple security updatesFor 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. watchOS 7.3Released January 26, 2021
Analytics Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
APFS Available for: Apple Watch Series 3 and later Impact: A local user may be able to read arbitrary files Description: The issue was addressed with improved permissions logic. CVE-2021-1797: Thomas Tempelmann Entry added February 1, 2021
CoreAnimation Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
CoreAudio Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
CoreGraphics Available for: Apple Watch Series 3 and later 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 added February 1, 2021
CoreText Available for: Apple Watch Series 3 and later 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 of Trend Micro working with Trend Micro’s Zero Day Initiative Entry added February 1, 2021, updated March 16, 2021
CoreText Available for: Apple Watch Series 3 and later 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 added February 1, 2021, updated March 16, 2021
Crash Reporter Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
Crash Reporter Available for: Apple Watch Series 3 and later Impact: A local attacker may be able to elevate their privileges Description: Multiple issues were addressed with improved logic. CVE-2021-1787: James Hutchins Entry added February 1, 2021
FairPlay Available for: Apple Watch Series 3 and later 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 and Mickey Jin of Trend Micro working with Trend Micro’s Zero Day Initiative Entry added February 1, 2021, updated March 16, 2021
FontParser Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 added March 16, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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-2021-1785: Xingwei Lin of Ant Security Light-Year Lab Entry added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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-2021-1744: Xingwei Lin of Ant Security Light-Year Lab Entry added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 added February 1, 2021, updated March 16, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021, updated March 16, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
ImageIO Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
IOSkywalkFamily Available for: Apple Watch Series 3 and later 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: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security Entry added February 1, 2021
iTunes Store Available for: Apple Watch Series 3 and later Impact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution Description: A validation issue was addressed with improved input sanitization. CVE-2021-1748: CodeColorist working with Ant Security Light-Year Labs Entry added February 1, 2021, updated March 16, 2021
Kernel Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021, updated March 16, 2021
Kernel Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
Kernel Available for: Apple Watch Series 3 and later 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 Swift Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
WebKit Available for: Apple Watch Series 3 and later 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) Entry added February 1, 2021, updated March 16, 2021
WebKit Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
WebKit Available for: Apple Watch Series 3 and later Impact: Maliciously crafted web content may violate iframe sandboxing policy Description: This issue was addressed with improved iframe sandbox enforcement. CVE-2021-1801: Eliya Stein of Confiant Entry added February 1, 2021
WebRTC Available for: Apple Watch Series 3 and later 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 Entry added February 1, 2021
Additional recognitioniTunes Store We would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance. Entry added February 1, 2021
Kernel We would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin & Jesse Change of Trend Micro for their assistance. Entry added February 1, 2021
libpthread We would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance. Entry added February 1, 2021
Store Demo We would like to acknowledge @08Tc3wBB for their assistance. Entry added February 1, 2021
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