CVE-2024-28047
📋 TL;DR
This vulnerability involves improper input validation in UEFI firmware for certain Intel processors, allowing a privileged user with local access to potentially disclose sensitive information. It affects systems using vulnerable Intel processors with the flawed UEFI firmware implementation. The risk primarily impacts environments where attackers have already gained privileged access.
💻 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 extract sensitive information from UEFI firmware, potentially including cryptographic keys, platform configuration data, or other protected system information.
Likely Case
Information disclosure of non-critical system data to already-privileged attackers, potentially aiding further attacks or reconnaissance.
If Mitigated
Minimal impact if proper access controls prevent unauthorized privileged access and systems are isolated from untrusted users.
🎯 Exploit Status
Requires local privileged access and knowledge of UEFI exploitation techniques. No public exploits known at this time.
🛠️ 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 Intel advisory for affected processor models. 2. Contact your system manufacturer for UEFI firmware updates. 3. Apply UEFI firmware update following manufacturer instructions. 4. Reboot system to activate new firmware.
🔧 Temporary Workarounds
Restrict privileged access
allLimit local administrative/root access to trusted personnel only
Enable Secure Boot
allEnsure Secure Boot is enabled to prevent unauthorized firmware modifications
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized privileged access
- Isolate affected systems from untrusted users and networks
🔍 How to Verify
Check if Vulnerable:
Check system BIOS/UEFI version against manufacturer's patched versions. Use 'dmidecode -t bios' on Linux or system information tools on Windows.Check Version:
Linux: dmidecode -t bios | grep Version; Windows: wmic bios get smbiosbiosversionVerify Fix Applied:
Verify UEFI firmware version matches or exceeds patched version from manufacturer. Check that Secure Boot is enabled.📡 Detection & Monitoring
Log Indicators:
- Unexpected firmware access attempts
- Privileged account misuse
- BIOS/UEFI configuration changes
Network Indicators:
- None - local attack only
SIEM Query:
Search for privileged account access patterns and firmware-related system events