CVE-2024-37978
📋 TL;DR
This vulnerability allows attackers to bypass Secure Boot protections on affected systems, potentially enabling them to load and execute unauthorized code during the boot process. It affects systems with Secure Boot enabled, primarily Windows devices. Attackers with physical access or administrative privileges could exploit this to compromise system integrity.
💻 Affected Systems
- Windows Secure Boot
📦 What is this software?
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with persistent malware that survives reboots and evades Secure Boot protections, enabling attackers to install rootkits or bootkits.
Likely Case
Local privilege escalation allowing attackers to bypass security controls and install malicious software that persists across reboots.
If Mitigated
Limited impact with proper physical security controls and administrative access restrictions in place.
🎯 Exploit Status
Requires local access and administrative privileges. Exploitation involves manipulating boot process components.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update Guide for specific KB numbers
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-37978
Restart Required: Yes
Instructions:
1. Apply latest Windows security updates from Microsoft. 2. Ensure UEFI/BIOS firmware is updated. 3. Restart system to complete installation.
🔧 Temporary Workarounds
Disable Secure Boot
allTemporarily disable Secure Boot feature to prevent exploitation (not recommended for production)
Access UEFI/BIOS settings during boot and disable Secure Boot option
Restrict Physical Access
allImplement strict physical security controls to prevent unauthorized local access
🧯 If You Can't Patch
- Implement strict physical security controls and access monitoring
- Restrict administrative privileges and implement least privilege access controls
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for applied security patches related to CVE-2024-37978Check Version:
wmic os get caption, version, buildnumber, csdversionVerify Fix Applied:
Verify Secure Boot is enabled and functioning properly in UEFI settings and Windows System Information📡 Detection & Monitoring
Log Indicators:
- Unexpected Secure Boot policy changes
- Unauthorized bootloader modifications
- Failed Secure Boot validations
Network Indicators:
- Not network exploitable - focus on local system monitoring
SIEM Query:
EventID=12 OR EventID=13 from Microsoft-Windows-Kernel-Boot OR Secure Boot policy changes