CVE-2023-31027
📋 TL;DR
This vulnerability in NVIDIA GPU Display Driver for Windows allows low-privileged users to escalate privileges when an administrator updates GPU drivers. Attackers could gain SYSTEM-level access during driver installation. This affects Windows systems with NVIDIA GPUs where driver updates occur.
💻 Affected Systems
- NVIDIA GPU Display Driver
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with SYSTEM privileges, allowing installation of persistent malware, credential theft, and lateral movement across the network.
Likely Case
Local privilege escalation to SYSTEM on workstations/servers during driver updates, enabling persistence and further exploitation.
If Mitigated
No impact if driver updates are performed in isolated environments or with strict access controls preventing low-privileged users from interacting with update processes.
🎯 Exploit Status
Requires local access and timing during driver updates. No public exploit code available as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 537.13 and later
Vendor Advisory: https://nvidia.custhelp.com/app/answers/detail/a_id/5491
Restart Required: Yes
Instructions:
1. Download latest NVIDIA driver from official website. 2. Run installer with administrative privileges. 3. Complete installation and restart system. 4. Verify driver version is 537.13 or newer.
🔧 Temporary Workarounds
Restrict driver update permissions
windowsLimit who can perform driver updates and ensure updates occur in isolated sessions
Disable automatic driver updates
windowsPrevent Windows from automatically updating NVIDIA drivers
gpedit.msc → Computer Configuration → Administrative Templates → Windows Components → Windows Update → Manage updates offered from Windows Update → Disable driver updates
🧯 If You Can't Patch
- Perform driver updates only in isolated maintenance windows with no other users logged in
- Implement strict access controls to prevent standard users from accessing systems during driver maintenance
🔍 How to Verify
Check if Vulnerable:
Check NVIDIA driver version in Device Manager → Display adapters → NVIDIA GPU → Driver tabCheck Version:
nvidia-smi (if installed) or check in Device ManagerVerify Fix Applied:
Confirm driver version is 537.13 or newer in Device Manager📡 Detection & Monitoring
Log Indicators:
- Windows Event Logs showing driver installation by non-admin users
- Unexpected privilege escalation events
- NVIDIA driver installation logs with suspicious timing
Network Indicators:
- Unusual outbound connections following driver updates
- Lateral movement attempts from previously low-privileged accounts
SIEM Query:
EventID=1 OR EventID=4688 WHERE (ProcessName contains 'nvidia' OR CommandLine contains 'nvidia') AND SubjectUserName NOT IN (admin_users_list)