● Apple Security Release · iOS 17.5

Apple Security Update: iOS 17.5 & Safari WebKit Zero-Day Triage

Technical advisory breakdown of Apple's recent iOS 17.5 and macOS Sonoma 14.5 security release addressing in-the-wild WebKit and Kernel vulnerabilities.

2
In-The-Wild Zero-Days
8.8
CVSS WebKit Score
Safari
WebContent Sandbox Target
Priority
Mobile Fleet Action

Executive Triage & Risk Verdict

Apple released security updates for iOS 17.5, iPadOS 17.5, and macOS Sonoma 14.5 fixing over 30 vulnerabilities. The focal point of the advisory is CVE-2024-23222, an actively exploited type confusion vulnerability in the WebKit browser engine allowing remote attackers processing web content to bypass Pointer Authentication (PAC) and execute arbitrary code.

Curated Vulnerability Triage Matrix

CVE Identifier Subsystem / Component Impact CVSS In-The-Wild Exploitation?
CVE-2024-23222WebKit / JavaScriptCoreJIT Type Confusion8.8 HighYES (Targeted Spyware)
CVE-2024-27834WebKit / Kernel IPCPointer Authentication Bypass7.8 HighYES (In-The-Wild)
CVE-2024-27822AppleMobileFileIntegrityPrivilege Escalation6.7 MediumNo
CVE-2024-27842Kernel CoreMemory Corruption7.8 HighNo
FEATURED CODE TEARDOWN

Deep Dive: CVE-2024-23222 Safari WebKit Object Unboxing Teardown →

See the open-source C++ patch from github.com/WebKit/WebKit showing how Apple fixed DFG JIT object unboxing verification.

← Browse Full Security Directory Explore All Source Teardowns →