CVE-2022-30224
📋 TL;DR
This vulnerability allows an authenticated attacker to exploit a flaw in Windows Advanced Local Procedure Call (ALPC) to elevate privileges from a lower-privileged account to SYSTEM level. It affects Windows operating systems where an attacker already has local access. Successful exploitation requires the attacker to have initial access to the system.
💻 Affected Systems
- Microsoft Windows
📦 What is this software?
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 11 by Microsoft
Windows 11 by Microsoft
Windows 7 by Microsoft
Windows 7 by Microsoft
Windows 8.1 by Microsoft
Windows 8.1 by Microsoft
Windows Rt 8.1 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full SYSTEM privileges, enabling complete system compromise, installation of malware, data theft, and persistence mechanisms.
Likely Case
Local privilege escalation from a standard user account to SYSTEM, allowing attackers to bypass security controls and execute arbitrary code with highest privileges.
If Mitigated
With proper patch management and least privilege principles, impact is limited as attackers would need initial access and the vulnerability would be patched.
🎯 Exploit Status
Exploitation requires local authenticated access and knowledge of the ALPC interface. Public proof-of-concept code exists.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: June 2022 security updates (KB5014699 for Windows 10, KB5014697 for Windows 11, etc.)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30224
Restart Required: Yes
Instructions:
1. Apply June 2022 Windows security updates via Windows Update. 2. For enterprise environments, deploy through WSUS or Microsoft Endpoint Configuration Manager. 3. Restart systems after patch installation.
🔧 Temporary Workarounds
Restrict local access
windowsLimit local user accounts and implement least privilege to reduce attack surface
Application control
windowsImplement application whitelisting to prevent unauthorized code execution
🧯 If You Can't Patch
- Implement strict least privilege principles - ensure users run with minimal necessary permissions
- Deploy endpoint detection and response (EDR) solutions to detect privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check if June 2022 security updates are installed via 'wmic qfe list' or 'Get-Hotfix -Id KB5014699' (adjust KB number for your OS version)Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify June 2022 security updates are installed and system has been restarted since installation📡 Detection & Monitoring
Log Indicators:
- Windows Security Event ID 4688 (process creation) showing unexpected SYSTEM privilege processes
- Event ID 4672 (special privileges assigned) for privilege escalation
Network Indicators:
- No direct network indicators as this is local exploitation
SIEM Query:
EventID=4688 AND NewProcessName="*" AND SubjectUserName!="SYSTEM" AND TokenElevationType="%%1938"