About the security content of watchOS 7.1

This document describes the security content of watchOS 7.1.

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watchOS 7.1

Released November 5, 2020

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

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 write was addressed with improved input validation.

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

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

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)

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: an anonymous researcher

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