About the security content of watchOS 7.1

This document describes the security content of watchOS 7.1.

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.

Apple security documents reference vulnerabilities by CVE-ID when possible.

For more information about security, see the Apple Product Security page.

watchOS 7.1

Audio

Available for: Apple Watch Series 3 and later

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: Apple Watch Series 3 and later

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

CoreAudio

Available for: Apple Watch Series 3 and later

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

CoreAudio

Available for: Apple Watch Series 3 and later

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-2020-27908: Anonymous working with Trend Micro Zero Day Initiative, JunDong Xie and XingWei Lin of Ant Security Light-Year Lab

CVE-2020-27909: Anonymous working with Trend Micro Zero Day Initiative, JunDong Xie and XingWei Lin of Ant Security Light-Year Lab

CoreText

Available for: Apple Watch Series 3 and later

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

Crash Reporter

Available for: Apple Watch Series 3 and later

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-2020-10003: Tim Michaud (@TimGMichaud) of Leviathan

FontParser

Available for: Apple Watch Series 3 and later

Impact: Processing a maliciously crafted font may lead to arbitrary code execution. Apple is aware of reports that an exploit for this issue exists in the wild.

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

CVE-2020-27930: Google Project Zero

FontParser

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-2020-27927: Xingwei Lin of Ant Security Light-Year Lab

Foundation

Available for: Apple Watch Series 3 and later

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

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-2020-27924: Lei Sun

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-2020-27912: Xingwei Lin of Ant Security Light-Year Lab

CVE-2020-27923: Lei Sun

IOAcceleratorFamily

Available for: Apple Watch Series 3 and later

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

Description: A memory corruption issue was addressed with improved state management.

CVE-2020-27905: Mohamed Ghannam (@_simo36)

Kernel

Available for: Apple Watch Series 3 and later

Impact: A malicious application may be able to disclose kernel memory. Apple is aware of reports that an exploit for this issue exists in the wild.

Description: A memory initialization issue was addressed.

CVE-2020-27950: Google Project Zero

Kernel

Available for: Apple Watch Series 3 and later

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: Apple Watch Series 3 and later

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: Apple Watch Series 3 and later

Impact: A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

Description: A type confusion issue was addressed with improved state handling.

CVE-2020-27932: Google Project Zero

libxml2

Available for: Apple Watch Series 3 and later

Impact: Processing maliciously crafted web content may lead to code execution

Description: A use after free issue was addressed with improved memory management.

CVE-2020-27917: found by OSS-Fuzz

CVE-2020-27920: found by OSS-Fuzz

libxml2

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: An integer overflow was addressed through improved input validation.

CVE-2020-27911: found by OSS-Fuzz

Logging

Available for: Apple Watch Series 3 and later

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)

Symptom Framework

Available for: Apple Watch Series 3 and later

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

Description: A use after free issue was addressed with improved memory management.

CVE-2020-27899: 08Tc3wBB working with ZecOps

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-2020-27918: Liu Long of Ant Security Light-Year Lab

XNU

Available for: Apple Watch Series 3 and later

Impact: A sandboxed process may be able to circumvent sandbox restrictions

Description: Multiple issues were addressed with improved logic.

CVE-2020-27935: Lior Halphon (@LIJI32)