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Date: Wed, 06 Dec 2017 10:43:39 -0800
From: Apple Product Security <product-security-noreply@...ts.apple.com>
To: security-announce@...ts.apple.com
Subject: [FD] APPLE-SA-2017-12-6-3 watchOS 4.2

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

APPLE-SA-2017-12-6-3 watchOS 4.2

watchOS 4.2 addresses the following:

IOSurface
Available for: All Apple Watch models
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-13861: Ian Beer of Google Project Zero

Kernel
Available for: All Apple Watch models
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-13862: Apple
CVE-2017-13876: Ian Beer of Google Project Zero

Kernel
Available for: All Apple Watch models
Impact: An application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2017-13833: Brandon Azad

Kernel
Available for: All Apple Watch models
Impact: An application may be able to read restricted memory
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2017-13855: Jann Horn of Google Project Zero

Kernel
Available for: All Apple Watch models
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-13867: Ian Beer of Google Project Zero

Kernel
Available for: All Apple Watch models
Impact: An application may be able to read restricted memory
Description: A validation issue was addressed with improved input
sanitization.
CVE-2017-13865: Ian Beer of Google Project Zero
CVE-2017-13868: Brandon Azad
CVE-2017-13869: Jann Horn of Google Project Zero

Wi-Fi
Available for: Apple Watch (1st Generation) and Apple Watch Series 3
Released for Apple Watch Series 1 and Apple Watch Series 2 in
watchOS 4.1.
Impact: An attacker in Wi-Fi range may force nonce reuse in WPA
multicast/GTK clients (Key Reinstallation Attacks - KRACK)
Description: A logic issue existed in the handling of state
transitions. This was addressed with improved state management.
CVE-2017-13080: Mathy Vanhoef of the imec-DistriNet group at KU
Leuven

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".

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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