About the security content of watchOS 5

This document describes the security content of watchOS 5.

About Apple security updates

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Apple security documents reference vulnerabilities by CVE-ID when possible.

watchOS 5

Released September 17, 2018

iTunes Store

Available for: Apple Watch Series 1 and later

Impact: An attacker in a privileged network position may be able to spoof password prompts in the iTunes Store

Description: An input validation issue was addressed with improved input validation.

CVE-2018-4305: Jerry Decime

Kernel

Available for: Apple Watch Series 1 and later

Impact: An application may be able to read restricted memory

Description: An input validation issue existed in the kernel. This issue was addressed with improved input validation.

CVE-2018-4363: Ian Beer of Google Project Zero

Kernel

Available for: Apple Watch Series 1 and later

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-2018-4336: Brandon Azad

CVE-2018-4344: The UK's National Cyber Security Centre (NCSC)

Entry added September 24, 2018

Safari

Available for: Apple Watch Series 1 and later

Impact: A local user may be able to discover websites a user has visited

Description: A consistency issue existed in the handling of application snapshots. The issue was addressed with improved handling of application snapshots.

CVE-2018-4313: 11 anonymous researchers, David Scott, Enes Mert Ulu of Abdullah Mürşide Özünenek Anadolu Lisesi - Ankara/Türkiye, Mehmet Ferit Daştan of Van Yüzüncü Yıl University, Metin Altug Karakaya of Kaliptus Medical Organization, Vinodh Swami of Western Governor's University (WGU)

Security

Available for: Apple Watch Series 1 and later

Impact: An attacker may be able to exploit weaknesses in the RC4 cryptographic algorithm

Description: This issue was addressed by removing RC4.

CVE-2016-1777: Pepi Zawodsky

WebKit

Available for: Apple Watch Series 1 and later

Impact: A malicious website may cause unexepected cross-origin behavior

Description: A cross-origin issue existed with iframe elements. This was addressed with improved tracking of security origins.

CVE-2018-4319: John Pettitt of Google

Entry added September 24, 2018

WebKit

Available for: Apple Watch Series 1 and later

Impact: Unexpected interaction causes an ASSERT failure

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

CVE-2018-4361: found by Google OSS-Fuzz

Entry added September 24, 2018

WebKit

Available for: Apple Watch Series 1 and later

Impact: Unexpected interaction causes an ASSERT failure

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

CVE-2018-4191: found by OSS-Fuzz

Entry added September 24, 2018

WebKit

Available for: Apple Watch Series 1 and later

Impact: Cross-origin SecurityErrors includes the accessed frame’s origin

Description: The issue was addressed by removing origin information.

CVE-2018-4311: Erling Alf Ellingsen (@steike)

Entry added September 24, 2018

WebKit

Available for: Apple Watch Series 1 and later

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

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2018-4299: Samuel Groβ (saelo) working with Trend Micro's Zero Day Initiative

CVE-2018-4359: Samuel Groß (@5aelo)

CVE-2018-4358: @phoenhex team (@bkth_ @5aelo @_niklasb) working with Trend Micro's Zero Day Initiative

Entry added September 24, 2018

Additional recognition

Core Data

We would like to acknowledge Andreas Kurtz (@aykay) of NESO Security Labs GmbH for their assistance.

Sandbox Profiles

We would like to acknowledge Tencent Keen Security Lab working with Trend Micro's Zero Day Initiative for their assistance.

SQLite

We would like to acknowledge Andreas Kurtz (@aykay) of NESO Security Labs GmbH for their assistance.

WebKit

We would like to acknowledge Tencent Keen Security Lab working with Trend Micro's Zero Day Initiative for their assistance.

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