CVE-2024-39285

5.3 MEDIUM

📋 TL;DR

This vulnerability in UEFI firmware for certain Intel server systems allows privileged users to bypass access controls and potentially read sensitive information from the firmware. It affects Intel Server M20NTP Family systems and requires local access to exploit.

💻 Affected Systems

Products:
  • Intel Server M20NTP Family
Versions: Specific firmware versions not specified in advisory, but all affected systems should be updated
Operating Systems: Any OS running on affected hardware
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects systems with the vulnerable UEFI firmware. Requires local privileged access to exploit.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

A privileged attacker with local access could extract sensitive firmware data including cryptographic keys, platform configuration, or other protected information that could facilitate further attacks.

🟠

Likely Case

A malicious administrator or compromised privileged account could access protected firmware regions to gather system information that should be restricted.

🟢

If Mitigated

With proper access controls and monitoring, the impact is limited to information gathering rather than system compromise.

🌐 Internet-Facing: LOW - This vulnerability requires local access to the system and cannot be exploited remotely.
🏢 Internal Only: MEDIUM - While it requires local access, privileged users within the organization could potentially exploit this for information disclosure.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires privileged local access and knowledge of UEFI firmware internals. No public exploits have been reported.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Update to latest firmware version as specified in Intel advisory

Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01175.html

Restart Required: Yes

Instructions:

1. Download latest firmware from Intel support site. 2. Follow manufacturer's firmware update procedures. 3. Reboot system to apply firmware update. 4. Verify firmware version after update.

🔧 Temporary Workarounds

Restrict physical and administrative access

all

Limit who has physical access to servers and reduce number of privileged accounts

Implement strict access controls

all

Enforce least privilege principles and monitor privileged user activities

🧯 If You Can't Patch

  • Implement strict physical security controls to prevent unauthorized local access
  • Monitor and audit all privileged user activities on affected systems

🔍 How to Verify

Check if Vulnerable:

Check system BIOS/UEFI firmware version against Intel's advisory. Use manufacturer tools or system management interfaces to verify firmware version.

Check Version:

System-specific commands vary by manufacturer. Typically: dmidecode -t bios (Linux) or wmic bios get smbiosbiosversion (Windows)

Verify Fix Applied:

After firmware update, verify the firmware version matches the patched version specified in Intel's advisory.

📡 Detection & Monitoring

Log Indicators:

  • Unexpected firmware access attempts
  • Privileged user accessing firmware management interfaces
  • System firmware modification logs

Network Indicators:

  • Local management interface access patterns

SIEM Query:

Search for firmware access events, BIOS/UEFI modification attempts, or privileged user activities on server management interfaces

🔗 References

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