CVE-2023-52080
📋 TL;DR
This vulnerability in IEIT NF5280M6 server UEFI firmware allows attackers with local NVRAM variable access to exploit a pool overflow via improper gRT->GetVariable() usage, potentially causing system crashes or memory tampering. It affects systems running vulnerable firmware versions up to 8.4.
💻 Affected Systems
- IEIT NF5280M6 Server
⚠️ 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
Complete system compromise through arbitrary code execution in UEFI firmware context, leading to persistent malware installation below operating system level.
Likely Case
System instability, crashes, or denial of service through memory corruption in UEFI environment.
If Mitigated
Limited impact with proper access controls preventing unauthorized NVRAM variable modification.
🎯 Exploit Status
Requires access to modify NVRAM variables on SPI Flash, typically needing physical or administrative privileges.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware version after 8.4
Vendor Advisory: https://support.ieisystem.com/lcjtww/psirt/security-advisories/2751271/index.html
Restart Required: Yes
Instructions:
1. Download latest firmware from IEIT support portal. 2. Follow vendor's firmware update procedure. 3. Reboot system to apply firmware update.
🔧 Temporary Workarounds
Restrict NVRAM Access
allImplement strict access controls to prevent unauthorized modification of NVRAM variables.
Physical Security Controls
allImplement physical security measures to prevent unauthorized physical access to servers.
🧯 If You Can't Patch
- Implement strict physical access controls to server hardware
- Monitor for unauthorized firmware modification attempts
🔍 How to Verify
Check if Vulnerable:
Check UEFI firmware version in BIOS/UEFI setup utility or using vendor-specific management tools.Check Version:
Vendor-specific commands vary; consult IEIT documentation for version checking tools.Verify Fix Applied:
Verify firmware version is greater than 8.4 in BIOS/UEFI setup or management interface.📡 Detection & Monitoring
Log Indicators:
- Unexpected system crashes
- Firmware modification logs
- Unauthorized access to BIOS/UEFI settings
Network Indicators:
- Not network exploitable
SIEM Query:
EventID for system crashes OR firmware modification events