CVE-2022-26704
📋 TL;DR
This macOS vulnerability allows malicious applications to bypass symlink validation and gain elevated privileges. It affects macOS Monterey versions before 12.4. Attackers could exploit this to execute arbitrary code with higher permissions than intended.
💻 Affected Systems
- macOS Monterey
📦 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 →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
Full system compromise with root privileges, allowing installation of persistent malware, data theft, and complete system control.
Likely Case
Local privilege escalation enabling attackers to bypass application sandboxes and gain unauthorized access to protected system resources.
If Mitigated
Limited impact with proper application sandboxing and user privilege separation, though still potentially allowing some privilege escalation.
🎯 Exploit Status
Exploitation requires user interaction to run a malicious application. Technical details and proof-of-concept code are publicly available in security disclosures.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Monterey 12.4
Vendor Advisory: https://support.apple.com/en-us/HT213257
Restart Required: Yes
Instructions:
1. Open System Preferences > Software Update. 2. Install macOS Monterey 12.4 update. 3. Restart the system when prompted.
🔧 Temporary Workarounds
Application Sandbox Enforcement
allEnsure all applications run with appropriate sandboxing and privilege restrictions
User Privilege Management
allLimit standard user privileges and avoid running untrusted applications
🧯 If You Can't Patch
- Implement strict application control policies to prevent execution of untrusted applications
- Use endpoint detection and response (EDR) solutions to monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check macOS version: If running macOS Monterey version earlier than 12.4, the system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version is 12.4 or later and check that security update 2022-004 has been applied.📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation events in system logs
- Symlink manipulation attempts in file system logs
- Unexpected application sandbox violations
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
source="macos_system_logs" AND (event="privilege_escalation" OR event="sandbox_violation")🔗 References
- http://seclists.org/fulldisclosure/2022/Jul/13
- http://seclists.org/fulldisclosure/2022/Jul/14
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0032/MNDT-2022-0032.md
- https://support.apple.com/en-us/HT213257
- https://support.apple.com/kb/HT213343
- https://support.apple.com/kb/HT213344
- http://seclists.org/fulldisclosure/2022/Jul/13
- http://seclists.org/fulldisclosure/2022/Jul/14
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0032/MNDT-2022-0032.md
- https://support.apple.com/en-us/HT213257
- https://support.apple.com/kb/HT213343
- https://support.apple.com/kb/HT213344
