CVE-2024-38102
📋 TL;DR
This vulnerability in the Windows Layer-2 Bridge Network Driver allows an attacker to cause a denial of service (system crash/BSOD) by sending specially crafted network packets. It affects Windows systems with the Layer-2 Bridge feature enabled. Attackers need local network access to exploit this vulnerability.
💻 Affected Systems
- Microsoft Windows
📦 What is this software?
Windows 10 1507 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 21h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash requiring reboot, potentially disrupting critical services on affected Windows systems.
Likely Case
Targeted denial of service attacks against specific Windows servers, causing temporary service disruption until system reboot.
If Mitigated
Minimal impact with proper network segmentation and disabled Layer-2 Bridge feature on non-essential systems.
🎯 Exploit Status
Exploitation requires network access to the target system but no authentication. The vulnerability is in the network driver processing layer.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: July 2024 security updates (specific KB numbers vary by Windows version)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38102
Restart Required: Yes
Instructions:
1. Apply July 2024 Windows security updates via Windows Update. 2. For enterprise environments, deploy updates through WSUS or SCCM. 3. Restart systems after patch installation.
🔧 Temporary Workarounds
Disable Layer-2 Bridge Feature
windowsDisable the vulnerable network bridge feature if not required for operations
Disable-NetAdapterBinding -Name "*" -ComponentID "ms_implat"
netsh bridge set adapter 1 state=disable
Network Segmentation
allSegment networks to limit access to systems with Layer-2 Bridge enabled
🧯 If You Can't Patch
- Disable Layer-2 Bridge network feature on all affected systems
- Implement strict network access controls to limit who can send traffic to systems with this feature enabled
🔍 How to Verify
Check if Vulnerable:
Check if Layer-2 Bridge is enabled: Get-NetAdapterBinding | Where-Object {$_.ComponentID -eq "ms_implat"} | Select-Object Name, EnabledCheck Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify July 2024 security updates are installed: Get-HotFix | Where-Object {$_.InstalledOn -like "*07/2024*"}📡 Detection & Monitoring
Log Indicators:
- System crash/BSOD events in Windows Event Logs (Event ID 41)
- Unexpected system reboots
- Network bridge service failures
Network Indicators:
- Unusual network traffic patterns to systems with Layer-2 Bridge enabled
- Multiple connection attempts to bridge interfaces
SIEM Query:
EventID=41 OR (Source="Kernel-Power" AND EventID=41) OR (Source="Microsoft-Windows-Kernel-General" AND EventID=16)