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About the security content of watchOS 4.2

Description

# About the security content of watchOS 4.2 This document describes the security content of watchOS 4.2. ## 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](<https://support.apple.com/kb/HT201222>) page. For more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page. You can encrypt communications with Apple using the [Apple Product Security PGP Key](<https://support.apple.com/kb/HT201601>). Apple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible. ![](/library/content/dam/edam/applecare/images/en_US/mac_apps/itunes/divider.png) ## watchOS 4.2 Released December 5, 2017 **Auto Unlock** Available for: All Apple Watch models Impact: An application may be able to gain elevated privileges Description: A race condition was addressed with additional validation. CVE-2017-13905: Samuel Groß (@5aelo) Entry added October 18, 2018 **CFNetwork Session** Available for: All Apple Watch models Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2017-7172: Richard Zhu (fluorescence) working with Trend Micro's Zero Day Initiative Entry added January 22, 2018 **CoreAnimation** Available for: All Apple Watch models Impact: An application may be able to execute arbitrary code with elevated privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2017-7171: 360 Security working with Trend Micro's Zero Day Initiative, and Tencent Keen Security Lab (@keen_lab) working with Trend Micro's Zero Day Initiative Entry added January 22, 2018 **CoreFoundation** Available for: All Apple Watch models Impact: An application may be able to gain elevated privileges Description: A race condition was addressed with additional validation. CVE-2017-7151: Samuel Groß (@5aelo) Entry added October 18, 2018 **IOKit** 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-2017-7162: Tencent Keen Security Lab (@keen_lab) working with Trend Micro's Zero Day Initiative Entry added December 21, 2017, updated January 10, 2018 **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-2017-13904: Kevin Backhouse of Semmle Ltd. Entry added February 14, 2018 **Kernel** Available for: All Apple Watch models Impact: A local user may be able to cause unexpected system termination or read kernel memory Description: An input validation issue existed in the kernel. This issue was addressed through improved input validation. CVE-2017-7154: Jann Horn of Google Project Zero Entry added January 10, 2018 **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-2017-13867: Ian Beer of Google Project Zero CVE-2017-13876: Ian Beer of Google Project Zero Entry updated December 21, 2017 **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-2017-7173: Brandon Azad Entry updated August 1, 2018 **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 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 Entry updated December 21, 2017 **Kernel** Available for: All Apple Watch models Impact: An application may be able to execute arbitrary code with kernel privilege Description: A memory corruption issue was addressed with improved memory handling. CVE-2017-13880: Apple Entry added October 18, 2018 **WebKit** Available for: All Apple Watch models Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2017-7165: 360 Security working with Trend Micro's Zero Day Initiative Entry updated January 22, 2017 **WebKit** Available for: All Apple Watch models Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2017-13884: 360 Security working with Trend Micro's Zero Day Initiative Entry updated January 22, 2017 **WebKit** Available for: All Apple Watch models Impact: Visiting a malicious website may lead to user interface spoofing Description: Redirect responses to 401 Unauthorized may allow a malicious website to incorrectly display the lock icon on mixed content. This issue was addressed through improved URL display logic. CVE-2017-7153: Jerry Decime Entry added January 11, 2018 **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](<https://support.apple.com/kb/HT208220>). 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 ![](/library/content/dam/edam/applecare/images/en_US/mac_apps/itunes/divider.png) ## No impact watchOS 4.2 is not impacted by the following issue: **Kernel** Impact: An application may be able to read kernel memory (Meltdown) Description: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. CVE-2017-5754: Jann Horn of Google Project Zero; Moritz Lipp of Graz University of Technology; Michael Schwarz of Graz University of Technology; Daniel Gruss of Graz University of Technology; Thomas Prescher of Cyberus Technology GmbH; Werner Haas of Cyberus Technology GmbH; Stefan Mangard of Graz University of Technology; Paul Kocher; Daniel Genkin of University of Pennsylvania and University of Maryland; Yuval Yarom of University of Adelaide and Data61; and Mike Hamburg of Rambus (Cryptography Research Division) Entry added January 4, 2018, updated January 10, 2018 Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information. Published Date: October 18, 2018


Affected Software


CPE Name Name Version
watchos 4.2

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