CVE-2024-49097
📋 TL;DR
This vulnerability in Windows PrintWorkflowUserSvc allows attackers to escalate privileges from a low-privileged user account to SYSTEM level. It affects Windows systems with the print workflow service enabled. Attackers must have initial access to a low-privileged account to exploit this vulnerability.
💻 Affected Systems
- Microsoft Windows
📦 What is this software?
Windows 10 1809 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Full SYSTEM compromise leading to complete host takeover, credential theft, lateral movement, and persistence establishment.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install malware, or access restricted resources on the compromised system.
If Mitigated
Limited impact if proper access controls, least privilege principles, and network segmentation are implemented.
🎯 Exploit Status
Exploitation requires local access and low-privileged user credentials. CWE-416 indicates a use-after-free vulnerability in the print workflow service.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply latest Windows security updates from Microsoft
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49097
Restart Required: Yes
Instructions:
1. Open Windows Update settings
2. Check for updates
3. Install all available security updates
4. Restart the system when prompted
🔧 Temporary Workarounds
Disable PrintWorkflowUserSvc Service
windowsDisables the vulnerable print workflow service to prevent exploitation
sc stop PrintWorkflowUserSvc
sc config PrintWorkflowUserSvc start= disabled
🧯 If You Can't Patch
- Implement strict access controls and least privilege principles for user accounts
- Monitor for suspicious activity related to print services and privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check if PrintWorkflowUserSvc service is running: sc query PrintWorkflowUserSvcCheck Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify Windows Update history shows the latest security patches installed and service is patched or disabled📡 Detection & Monitoring
Log Indicators:
- Event ID 4688 with PrintWorkflowUserSvc parent process
- Unexpected SYSTEM-level processes spawned from print-related services
- Access violations in print service logs
Network Indicators:
- Unusual outbound connections from print servers
- SMB or RPC traffic from print-related services to sensitive systems
SIEM Query:
source="windows" AND (process_name="PrintWorkflowUserSvc" OR parent_process="PrintWorkflowUserSvc") AND (privilege_escalation OR integrity_level_change)