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APPLE-SA-2020-03-24-4 watchOS 6.2

watchOS 6.2 is now available and addresses the following:

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: A malicious application may be able to identify what other
applications a user has installed
Description: The issue was addressed with improved handling of icon
caches.
CVE-2020-9773: Chilik Tamir of Zimperium zLabs

Icons
Available for: Apple Watch Series 1 and later
Impact: Setting an alternate 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 initialization issue was addressed with
improved memory handling.
CVE-2020-3919: an anonymous researcher

Kernel
Available for: Apple Watch Series 1 and later
Impact: An application may be able to read restricted memory
Description: A memory initialization 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

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 and
an anonymous researcher for their assistance.

Installation note:

Instructions on how to update your Apple Watch software are
available at https://support.apple.com/kb/HT204641

To check the version on your Apple Watch, open the Apple Watch app
on your iPhone and select "My Watch > General > About".

Alternatively, on your watch, select "My Watch > General > About".
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