CVE-2024-31157
📋 TL;DR
This vulnerability in UEFI firmware's OutOfBandXML module on certain Intel processors allows privileged users to potentially disclose sensitive information through local access. It affects systems with specific Intel processors that have vulnerable UEFI firmware. The risk primarily impacts organizations using affected hardware with privileged user 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
Privileged attacker could extract sensitive firmware data, system configuration details, or cryptographic keys from memory, potentially enabling further attacks.
Likely Case
Information disclosure of non-critical system data by malicious insiders or compromised privileged accounts.
If Mitigated
Limited impact with proper access controls and monitoring of privileged accounts.
🎯 Exploit Status
Requires local access and privileged user credentials. Exploitation involves specific UEFI firmware interaction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: UEFI firmware updates from 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 processors. 2. Contact system manufacturer for UEFI firmware updates. 3. Apply firmware update following manufacturer instructions. 4. Reboot system to activate new firmware.
🔧 Temporary Workarounds
Restrict privileged access
allLimit local administrative/root access to essential personnel only
Implement privilege monitoring
allMonitor and audit privileged user activities on affected systems
🧯 If You Can't Patch
- Implement strict access controls and monitor privileged user activities
- Isolate affected systems from sensitive networks and data
🔍 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 smbiosbiosversion'Verify Fix Applied:
Verify UEFI firmware version matches manufacturer's patched version after update.📡 Detection & Monitoring
Log Indicators:
- Unusual UEFI/BIOS access attempts
- Privileged user accessing firmware interfaces
Network Indicators:
- Local system activity only - no network indicators
SIEM Query:
Search for privileged user activities involving firmware/UEFI access or unusual system configuration changes