CVE-2023-38564
📋 TL;DR
This macOS vulnerability allows malicious applications to bypass file system protection mechanisms and modify restricted system areas. It affects macOS Ventura systems before version 13.5. The vulnerability could enable privilege escalation or system compromise.
💻 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 through privilege escalation, allowing attackers to install persistent malware, modify critical system files, or access sensitive data.
Likely Case
Malicious applications gaining elevated privileges to modify system files, potentially leading to data theft, system instability, or further exploitation.
If Mitigated
Limited impact with proper application sandboxing, least privilege principles, and security monitoring in place.
🎯 Exploit Status
Requires user to execute a malicious application. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Ventura 13.5
Vendor Advisory: https://support.apple.com/en-us/HT213843
Restart Required: Yes
Instructions:
1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Ventura 13.5 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
- Enable full disk encryption and monitor for unauthorized file system modifications
🔍 How to Verify
Check if Vulnerable:
Check macOS version: if running Ventura and version is less than 13.5, system is vulnerableCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is 13.5 or higher and check that security updates have been applied📡 Detection & Monitoring
Log Indicators:
- Unauthorized file modifications in protected directories
- Unexpected application privilege escalation attempts
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
source="macos" AND (event_type="file_modification" AND file_path="/System/*" OR file_path="/Library/*")