CVE-2024-28127
📋 TL;DR
This UEFI firmware vulnerability in certain Intel processors allows privileged local attackers to bypass security controls and gain higher system privileges through improper input validation. It affects systems with vulnerable Intel processors and requires local access to exploit. The vulnerability resides in the firmware layer, making it persistent across operating system installations.
💻 Affected Systems
- Intel processors with vulnerable UEFI firmware
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
A privileged attacker could gain complete control of the system, bypass secure boot, install persistent firmware-level malware, and compromise the entire hardware platform.
Likely Case
Local administrators or compromised privileged accounts could escalate privileges to gain deeper system access, potentially bypassing security software and accessing protected memory regions.
If Mitigated
With proper access controls limiting local administrative privileges and firmware write protections enabled, exploitation would be significantly more difficult.
🎯 Exploit Status
Requires local privileged access and knowledge of UEFI firmware internals. No public exploit code available as of advisory publication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: UEFI firmware updates provided by system manufacturers
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01139.html
Restart Required: Yes
Instructions:
1. Check system manufacturer's website for UEFI/BIOS updates. 2. Download appropriate firmware update for your specific system model. 3. Follow manufacturer's firmware update instructions carefully. 4. Reboot system to apply firmware update.
🔧 Temporary Workarounds
Restrict local administrative access
allLimit the number of users with local administrative privileges to reduce attack surface
Enable firmware write protection
allEnable BIOS/UEFI write protection features if available in system settings
🧯 If You Can't Patch
- Implement strict access controls to limit local administrative privileges
- Monitor for suspicious firmware modification attempts and privilege escalation activities
🔍 How to Verify
Check if Vulnerable:
Check system manufacturer's website with your system model/serial number to see if affected. Check current UEFI firmware version in BIOS/UEFI settings.Check Version:
On Windows: wmic bios get smbiosbiosversion
On Linux: dmidecode -s bios-versionVerify Fix Applied:
Verify UEFI firmware version after update matches manufacturer's patched version. Check that firmware update was successfully applied in system logs.📡 Detection & Monitoring
Log Indicators:
- UEFI/BIOS firmware modification events
- Privilege escalation attempts
- Suspicious local administrative activity
Network Indicators:
- None - local access only vulnerability
SIEM Query:
Event logs showing firmware modification or privilege escalation from local accounts