CVE-2022-46721
📋 TL;DR
This is a memory corruption vulnerability (CWE-787) in macOS that allows a malicious application to execute arbitrary code with kernel privileges. It affects macOS systems before Ventura 13, potentially giving attackers full system control. All users running vulnerable macOS versions are affected.
💻 Affected Systems
- macOS
📦 What is this software?
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 →⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with kernel-level access, allowing attackers to install persistent malware, steal all data, disable security controls, and use the system as a launchpad for further attacks.
Likely Case
Malicious applications gaining kernel privileges to bypass security mechanisms, install rootkits, or perform privilege escalation attacks.
If Mitigated
Limited impact if proper application sandboxing and least privilege principles are enforced, though kernel access still poses significant risk.
🎯 Exploit Status
Exploitation requires a malicious application to be executed on the target system. Apple has addressed this in their security updates.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Ventura 13 and later
Vendor Advisory: https://support.apple.com/en-us/HT213488
Restart Required: Yes
Instructions:
1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Ventura 13 or later 5. Restart when prompted
🔧 Temporary Workarounds
Application Restriction
allRestrict installation and execution of untrusted applications
sudo spctl --master-enable
sudo spctl --enable --label "Developer ID"
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent execution of untrusted applications
- Use network segmentation to isolate vulnerable systems and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check macOS version: if earlier than Ventura 13, system is vulnerableCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is Ventura 13 or later and security update HT213488 is installed📡 Detection & Monitoring
Log Indicators:
- Unexpected kernel extensions loading
- Processes running with unexpected root privileges
- System integrity protection (SIP) violations
Network Indicators:
- Unusual outbound connections from system processes
- DNS requests to suspicious domains from kernel processes
SIEM Query:
source="macos_system_logs" AND (event="kernel_extension_load" OR process_privilege="root") AND NOT user="legitimate_user"