CVE-2024-2315
📋 TL;DR
This vulnerability in AMI AptioV BIOS allows local attackers to bypass access controls and modify SPI flash memory, potentially installing persistent bootkits or bricking systems. It affects systems with vulnerable AMI BIOS firmware versions. Physical or administrative access is required for exploitation.
💻 Affected Systems
- Systems with AMI AptioV BIOS firmware
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains persistent control over system boot process, installs undetectable firmware-level malware, bricks hardware, or bypasses secure boot protections.
Likely Case
Malicious insider or compromised administrator installs bootkit for persistence, data theft, or lateral movement within secure environments.
If Mitigated
With proper BIOS write protections and administrative controls, impact limited to denial of service through potential bricking attempts.
🎯 Exploit Status
Requires local administrative access or physical access to system; BIOS modification tools/knowledge needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with system/OEM manufacturer for specific BIOS updates
Vendor Advisory: https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024004.pdf
Restart Required: Yes
Instructions:
1. Identify system manufacturer and model. 2. Check manufacturer's support site for BIOS/UEFI firmware updates. 3. Download and verify update. 4. Follow manufacturer's flashing instructions carefully. 5. Reboot system after update.
🔧 Temporary Workarounds
Enable BIOS Write Protection
allConfigure BIOS settings to prevent unauthorized SPI flash modifications
Restrict Physical Access
allImplement physical security controls to prevent unauthorized local access
🧯 If You Can't Patch
- Implement strict administrative access controls and monitor for unauthorized BIOS modification attempts
- Deploy endpoint detection that monitors for BIOS/UEFI firmware modification indicators
🔍 How to Verify
Check if Vulnerable:
Check BIOS version against manufacturer's vulnerability list; use 'wmic bios get smbiosbiosversion' on Windows or 'dmidecode -t bios' on LinuxCheck Version:
Windows: wmic bios get smbiosbiosversion | Linux: sudo dmidecode -t bios | grep VersionVerify Fix Applied:
Verify BIOS version after update matches patched version from manufacturer📡 Detection & Monitoring
Log Indicators:
- BIOS/UEFI firmware update events outside maintenance windows
- Unauthorized administrative access to BIOS settings
Network Indicators:
- Unusual outbound connections from systems during boot process
SIEM Query:
EventID=12 OR EventID=13 (System events for boot) combined with unauthorized user activity