CVE-2023-31310
📋 TL;DR
This vulnerability allows attackers with existing system privileges to send malformed commands to Power Management Firmware, potentially disrupting temperature control functions. It affects systems with AMD processors using vulnerable PMFW versions. The impact is limited to integrity and availability of power management features.
💻 Affected Systems
- AMD processors with vulnerable Power Management 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
Complete loss of power management functionality leading to system instability, thermal issues, or forced shutdowns.
Likely Case
Temporary disruption of temperature monitoring or control functions requiring system reboot.
If Mitigated
Minimal impact if proper privilege separation and input validation are implemented.
🎯 Exploit Status
Requires privileged access to system and knowledge of PMFW interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to AMD advisory for specific firmware versions
Vendor Advisory: https://www.amd.com/en/resources/product-security/bulletin/amd-sb-6005.html
Restart Required: Yes
Instructions:
1. Check AMD advisory for affected processor models
2. Download updated firmware from system/motherboard vendor
3. Follow vendor-specific firmware update procedures
4. Reboot system after update
🔧 Temporary Workarounds
Restrict privileged access
allLimit system administrator privileges to trusted personnel only
Implement least privilege
allEnsure users and services only have necessary permissions
🧯 If You Can't Patch
- Implement strict access controls and privilege separation
- Monitor for unusual system behavior or privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check system BIOS/firmware version against AMD advisory for affected modelsCheck Version:
System-specific commands vary by manufacturer (e.g., dmidecode on Linux, systeminfo on Windows)Verify Fix Applied:
Verify firmware version has been updated to patched version📡 Detection & Monitoring
Log Indicators:
- Unusual firmware access attempts
- System logs showing temperature sensor errors
- Unexpected system reboots or thermal events
Network Indicators:
- Not network exploitable - local system vulnerability
SIEM Query:
Search for: firmware access events from non-admin users OR temperature sensor anomalies