About the security content of watchOS 4.3
This document describes the security content of watchOS 4.3.
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.
For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.
Apple security documents reference vulnerabilities by CVE-ID when possible.
watchOS 4.3
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-2018-4155: Samuel Groß (@5aelo)
CVE-2018-4158: Samuel Groß (@5aelo)
CoreText
Available for: All Apple Watch models
Impact: Processing a maliciously crafted string may lead to a denial of service
Description: A denial of service issue was addressed with improved memory handling.
CVE-2018-4142: Robin Leroy of Google Switzerland GmbH
File System Events
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-2018-4167: Samuel Groß (@5aelo)
Kernel
Available for: All Apple Watch models
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: Multiple memory corruption issues were addressed with improved memory handling.
CVE-2018-4150: an anonymous researcher
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 sanitisation.
CVE-2018-4104: The UK's National Cyber Security Centre (NCSC)
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-2018-4143: derrek (@derrekr6)
Kernel
Available for: All Apple Watch models
Impact: a malicious application may be able to determine kernel memory layout
Description: An information disclosure issue existed in the transition of programme state. This issue was addressed with improved state handling.
CVE-2018-4185: Brandon Azad
libxml2
Available for: All Apple Watch models
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use after free issue was addressed with improved memory management.
CVE-2017-15412: Nick Wellnhofer
LinkPresentation
Available for: All Apple Watch models
Impact: visiting a malicious website may lead to address bar spoofing
Description: an inconsistent user interface issue was addressed with improved state management.
CVE-2018-4390: Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter
CVE-2018-4391: Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter
NSURLSession
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-2018-4166: Samuel Groß (@5aelo)
Quick Look
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-2018-4157: Samuel Groß (@5aelo)
Security
Available for: All Apple Watch models
Impact: A malicious application may be able to elevate privileges
Description: A buffer overflow was addressed with improved size validation.
CVE-2018-4144: Abraham Masri (@cheesecakeufo)
System Preferences
Available for: All Apple Watch models
Impact: A configuration profile may incorrectly remain in effect after removal
Description: An issue existed in CFPreferences. This issue was addressed with improved preferences cleanup.
CVE-2018-4115: Johann Thalakada, Vladimir Zubkov, and Matt Vlasach of Wandera
WebKit
Available for: All Apple Watch models
Impact: Unexpected interaction with indexing types causing an ASSERT failure
Description: An array indexing issue existed in the handling of a function in javascript core. This issue was addressed with improved checks.
CVE-2018-4113: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: Processing maliciously crafted web content may lead to a denial of service
Description: a memory corruption issue was addressed with improved input validation.
CVE-2018-4146: found by OSS-Fuzz
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-2018-4114: found by OSS-Fuzz
CVE-2018-4121: natashenka of Google Project Zero
CVE-2018-4122: WanderingGlitch of Trend Micro’s Zero Day Initiative
CVE-2018-4125: WanderingGlitch of Trend Micro's Zero Day Initiative
CVE-2018-4129: likemeng of Baidu Security Lab working with Trend Micro's Zero Day Initiative
CVE-2018-4161: WanderingGlitch of Trend Micro's Zero Day Initiative
CVE-2018-4162: WanderingGlitch of Trend Micro's Zero Day Initiative
CVE-2018-4163: WanderingGlitch of Trend Micro's Zero Day Initiative
WebKit
Available for: All Apple Watch models
Impact: A malicious website may exfiltrate data cross-origin
Description: A cross-origin issue existed with the fetch API. This was addressed with improved input validation.
CVE-2018-4117: an anonymous researcher, an anonymous researcher
WebKit
Available for: All Apple Watch models
Impact: unexpected interaction causes an ASSERT failure
Description: This issue was addressed with improved checks.
CVE-2018-4207: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: unexpected interaction causes an ASSERT failure
Description: This issue was addressed with improved checks.
CVE-2018-4208: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: unexpected interaction causes an ASSERT failure
Description: This issue was addressed with improved checks.
CVE-2018-4209: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: Unexpected interaction with indexing types caused a failure
Description: An array indexing issue existed in the handling of a function in javascript core. This issue was addressed with improved checks.
CVE-2018-4210: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: unexpected interaction causes an ASSERT failure
Description: This issue was addressed with improved checks.
CVE-2018-4212: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: unexpected interaction causes an ASSERT failure
Description: This issue was addressed with improved checks.
CVE-2018-4213: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: Processing maliciously crafted web content may lead to code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
CVE-2018-4145: found by OSS-Fuzz
Additional recognition
We would like to acknowledge Sabri Haddouche (@pwnsdx) from Wire Swiss GmbH for their assistance.
Security
We would like to acknowledge Abraham Masri (@cheesecakeufo) for their assistance.
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