CVE-2024-30011
📋 TL;DR
This vulnerability in Windows Hyper-V allows an authenticated attacker on a guest virtual machine to cause a denial of service condition on the host system. It affects Windows systems running Hyper-V virtualization. The attacker must have local access to a guest VM and execute specially crafted code.
💻 Affected Systems
- Windows Hyper-V
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete host system crash or freeze requiring physical reboot, disrupting all VMs and services running on that host.
Likely Case
Temporary host instability causing performance degradation or service interruption for some VMs until system recovers.
If Mitigated
Minimal impact with proper network segmentation and limited guest VM privileges.
🎯 Exploit Status
Requires authenticated access to guest VM and ability to execute code. No public exploit code available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: May 2024 security updates (KB5037771 for Windows 11, KB5037768 for Windows 10, etc.)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30011
Restart Required: Yes
Instructions:
1. Apply May 2024 Windows security updates via Windows Update. 2. For enterprise: Deploy through WSUS, SCCM, or Microsoft Update Catalog. 3. Restart affected systems after patch installation.
🔧 Temporary Workarounds
Disable Hyper-V
windowsDisable Hyper-V feature if not required, eliminating attack surface.
Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All
Restrict Guest VM Privileges
allLimit user privileges on guest VMs to prevent code execution.
🧯 If You Can't Patch
- Segment Hyper-V hosts on isolated network segments to limit attack surface
- Implement strict access controls and monitoring for guest VM activities
🔍 How to Verify
Check if Vulnerable:
Check if Hyper-V is enabled and system has not applied May 2024 security updates.Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify May 2024 security updates are installed via 'winver' or 'systeminfo' command.📡 Detection & Monitoring
Log Indicators:
- Event ID 41 (Kernel-Power) with bugcheck code
- Hyper-V host crashes or unexpected reboots
- Increased error logs from VMMS service
Network Indicators:
- Sudden loss of connectivity to all VMs on a host
- Unusual guest VM network activity preceding host issues
SIEM Query:
EventID=41 AND Source="Microsoft-Windows-Kernel-Power" AND Description contains "bugcheck"