About the security content of watchOS 6.2

This document describes the security content of watchOS 6.2.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss or confirm security issues until an investigation has taken place 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 6.2

Accounts

Available for: Apple Watch Series 1 and later

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

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9772: Allison Husain of UC Berkeley

ActionKit

Available for: Apple Watch Series 1 and later

Impact: An application may be able to use an SSH client provided by private frameworks

Description: This issue was addressed with a new entitlement.

CVE-2020-3917: Steven Troughton-Smith (@stroughtonsmith)

AppleMobileFileIntegrity

Available for: Apple Watch Series 1 and later

Impact: An application may be able to use arbitrary entitlements

Description: This issue was addressed with improved checks.

CVE-2020-3883: Linus Henze (pinauten.de)

CoreFoundation

Available for: Apple Watch Series 1 and later

Impact: A malicious application may be able to elevate privileges

Description: A permissions issue existed. This issue was addressed with improved permission validation.

CVE-2020-3913: Timo Christ of Avira Operations GmbH & Co. KG

Icons

Available for: Apple Watch Series 1 and later

Impact: Setting an alternative app icon may disclose a photo without needing permission to access photos

Description: An access issue was addressed with additional sandbox restrictions.

CVE-2020-3916: Vitaliy Alekseev (@villy21)

Image Processing

Available for: Apple Watch Series 1 and later

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

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

CVE-2020-9768: Mohamed Ghannam (@_simo36)

IOHIDFamily

Available for: Apple Watch Series 1 and later

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

Description: A memory initialisation issue was addressed with improved memory handling.

CVE-2020-3919: Alex Plaskett of F-Secure Consulting

Kernel

Available for: Apple Watch Series 1 and later

Impact: An application may be able to read restricted memory

Description: A memory initialisation issue was addressed with improved memory handling.

CVE-2020-3914: pattern-f (@pattern_F_) of WaCai

Kernel

Available for: Apple Watch Series 1 and later

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

Description: Multiple memory corruption issues were addressed with improved state management.

CVE-2020-9785: Proteas of Qihoo 360 Nirvan Team

libxml2

Available for: Apple Watch Series 1 and later

Impact: Multiple issues in libxml2

Description: A buffer overflow was addressed with improved bounds checking.

CVE-2020-3909: LGTM.com

CVE-2020-3911: found by OSS-Fuzz

libxml2

Available for: Apple Watch Series 1 and later

Impact: Multiple issues in libxml2

Description: A buffer overflow was addressed with improved size validation.

CVE-2020-3910: LGTM.com

Messages

Available for: Apple Watch Series 1 and later

Impact: A person with physical access to a locked iOS device may be able to respond to messages even when replies are disabled

Description: A logic issue was addressed with improved state management.

CVE-2020-3891: Peter Scott

Sandbox

Available for: Apple Watch Series 1 and later

Impact: A local user may be able to view sensitive user information

Description: An access issue was addressed with additional sandbox restrictions.

CVE-2020-3918: Augusto Alvarez of Outcourse Limited

WebKit

Available for: Apple Watch Series 1 and later

Impact: Some websites may not have appeared in Safari Preferences

Description: A logic issue was addressed with improved restrictions.

CVE-2020-9787: Ryan Pickren (ryanpickren.com)

WebKit

Available for: Apple Watch Series 1 and later

Impact: A remote attacker may be able to cause arbitrary code execution

Description: A memory consumption issue was addressed with improved memory handling.

CVE-2020-3899: found by OSS-Fuzz

WebKit

Available for: Apple Watch Series 1 and later

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

Description: A memory corruption issue was addressed with improved memory handling.

CVE-2020-3895: grigoritchy

CVE-2020-3900: Dongzhuo Zhao working with ADLab of Venustech

WebKit

Available for: Apple Watch Series 1 and later

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

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

CVE-2020-3901: Benjamin Randazzo (@____benjamin)

WebKit

Available for: Apple Watch Series 1 and later

Impact: A remote attacker may be able to cause arbitrary code execution

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

CVE-2020-3897: Brendan Draper (@6r3nd4n) working with Trend Micro’s Zero Day Initiative

Additional recognition

FontParser

We would like to acknowledge Matthew Denton of Google Chrome for their assistance.

Kernel

We would like to acknowledge Siguza for their assistance.

LinkPresentation

We would like to acknowledge Travis for their assistance.

Phone

We would like to acknowledge Yiğit Can YILMAZ (@yilmazcanyigit) for their assistance.

rapportd

We would like to acknowledge Alexander Heinrich (@Sn0wfreeze) of Technische Universität Darmstadt for their assistance.

WebKit

We would like to acknowledge Samuel Groß of Google Project Zero, hearmen for their assistance.