CVE-2023-27969
📋 TL;DR
This CVE describes a use-after-free vulnerability in Apple operating systems that allows an app to execute arbitrary code with kernel privileges. It affects macOS, iOS, iPadOS, tvOS, and watchOS. Successful exploitation gives attackers complete control over affected devices.
💻 Affected Systems
- macOS
- iOS
- iPadOS
- tvOS
- watchOS
📦 What is this software?
Ipados by Apple
Ipados by Apple
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Tvos by Apple
Watchos by Apple
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with kernel-level privileges, allowing attackers to install persistent malware, steal all data, and control device functionality.
Likely Case
Privilege escalation from userland to kernel, enabling data theft, surveillance, and installation of malicious software.
If Mitigated
Limited impact if devices are fully patched and app installation is restricted to trusted sources only.
🎯 Exploit Status
Exploitation requires an attacker to get a malicious app installed on the target device, which typically requires user interaction or social engineering.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Ventura 13.3, iOS 16.4, iPadOS 16.4, iOS 15.7.4, iPadOS 15.7.4, tvOS 16.4, watchOS 9.4
Vendor Advisory: https://support.apple.com/en-us/HT213670
Restart Required: Yes
Instructions:
1. Open Settings/System Preferences. 2. Navigate to Software Update. 3. Download and install the latest available update. 4. Restart the device when prompted.
🔧 Temporary Workarounds
Restrict App Installation
allLimit app installation to App Store only to reduce attack surface
🧯 If You Can't Patch
- Isolate affected devices from critical networks and sensitive data
- Implement strict application allowlisting and monitor for suspicious app installations
🔍 How to Verify
Check if Vulnerable:
Check system version against affected versions listed in Apple advisoriesCheck Version:
macOS: sw_vers -productVersion, iOS/iPadOS: Settings > General > About > Version, tvOS: Settings > General > About > Version, watchOS: Settings > General > About > VersionVerify Fix Applied:
Verify system version is equal to or newer than patched versions listed in fix_official section📡 Detection & Monitoring
Log Indicators:
- Unexpected kernel panics or crashes
- Suspicious app installation events
- Unusual privilege escalation attempts
Network Indicators:
- Unusual outbound connections from Apple devices
- Communication with known malicious domains
SIEM Query:
source="apple_system_logs" AND (event="kernel_panic" OR event="app_install")🔗 References
- https://support.apple.com/en-us/HT213670
- https://support.apple.com/en-us/HT213673
- https://support.apple.com/en-us/HT213674
- https://support.apple.com/en-us/HT213676
- https://support.apple.com/en-us/HT213678
- https://support.apple.com/en-us/HT213670
- https://support.apple.com/en-us/HT213673
- https://support.apple.com/en-us/HT213674
- https://support.apple.com/en-us/HT213676
- https://support.apple.com/en-us/HT213678
