About the security content of watchOS 4.3.2
This document describes the security content of watchOS 4.3.2.
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 page.
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Apple security documents reference vulnerabilities by CVE-ID when possible.
watchOS 4.3.2
CFNetwork
Available for: All Apple Watch models
Impact: Cookies may unexpectedly persist in Safari
Description: A cookie management issue was addressed with improved checks.
CVE-2018-4293: an anonymous researcher
CoreCrypto
Available for: All Apple Watch models
Impact: A malicious application may be able to break out of its sandbox
Description: A memory corruption issue was addressed with improved input validation.
CVE-2018-4269: Abraham Masri (@cheesecakeufo)
Emoji
Available for: All Apple Watch models
Impact: Processing an emoji under certain configurations may lead to a denial of service
Description: A denial of service issue was addressed with improved memory handling.
CVE-2018-4290: Patrick Wardle of Digita Security
Kernel
Available for: All Apple Watch models
Impact: A local user may be able to read kernel memory
Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.
CVE-2018-4282: Adam Donenfeld (@doadam) of the Zimperium zLabs Team, Proteas of Qihoo 360 Nirvan Team, Valentin "slashd" Shilnenkov
libxpc
Available for: All Apple Watch models
Impact: An application may be able to gain elevated privileges
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2018-4280: Brandon Azad
libxpc
Available for: All Apple Watch models
Impact: A malicious application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2018-4248: Brandon Azad
LinkPresentation
Available for: All Apple Watch models
Impact: Visiting a malicious website may lead to address bar spoofing
Description: A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.
CVE-2018-4277: xisigr of Tencent's Xuanwu Lab (tencent.com)
WebKit
Available for: All Apple Watch models
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2018-4270: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A type confusion issue was addressed with improved memory handling.
CVE-2018-4284: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: A malicious website may be able to cause a denial of service
Description: A race condition was addressed with additional validation.
CVE-2018-4266: 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-2018-4262: Mateusz Krzywicki working with Trend Micro's Zero Day Initiative
CVE-2018-4264: found by OSS-Fuzz, Yu Zhou and Jundong Xie of Ant-financial Light-Year Security Lab
CVE-2018-4272: found by OSS-Fuzz
WebKit
Available for: All Apple Watch models
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: Multiple memory corruption issues were addressed with improved input validation.
CVE-2018-4271: found by OSS-Fuzz
CVE-2018-4273: found by OSS-Fuzz
Additional recognition
Kernel
We would like to acknowledge juwei lin (@panicaII) of Trend Micro working with Trend Micro’s Zero Day Initiative for their assistance.
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