CVE-2023-28383
📋 TL;DR
This vulnerability in Intel BIOS PPAM firmware allows a privileged user with local access to potentially escalate privileges by bypassing proper conditions checks. It affects systems with specific Intel processors and BIOS versions. Attackers could gain higher system privileges than intended.
💻 Affected Systems
- Intel processors with PPAM firmware feature
⚠️ 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 with administrative privileges, allowing installation of persistent malware, data theft, or disabling security controls.
Likely Case
Privileged user gains additional system privileges beyond their intended level, potentially accessing restricted data or modifying system configurations.
If Mitigated
Limited impact with proper privilege separation and monitoring, though risk remains for systems with privileged local users.
🎯 Exploit Status
Requires privileged local access and knowledge of the vulnerability. No public exploit code known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: BIOS updates provided by system manufacturers
Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00814.html
Restart Required: Yes
Instructions:
1. Check Intel advisory for affected processor models. 2. Contact your system manufacturer for BIOS updates. 3. Apply BIOS update following manufacturer instructions. 4. Reboot system to complete installation.
🔧 Temporary Workarounds
Restrict local privileged access
allLimit number of users with local administrative privileges to reduce attack surface
Implement least privilege
allEnsure users only have minimum necessary privileges for their roles
🧯 If You Can't Patch
- Implement strict access controls and monitoring for privileged accounts
- Isolate affected systems from critical network segments
🔍 How to Verify
Check if Vulnerable:
Check system BIOS version against manufacturer's patched versions. Use 'wmic bios get smbiosbiosversion' on Windows or 'dmidecode -t bios' on Linux.Check Version:
Windows: wmic bios get smbiosbiosversion | Linux: sudo dmidecode -t bios | grep VersionVerify Fix Applied:
Verify BIOS version matches patched version from manufacturer after update. Check that system boots successfully with new BIOS.📡 Detection & Monitoring
Log Indicators:
- Unusual BIOS access attempts
- Privilege escalation events
- Unexpected system configuration changes
Network Indicators:
- Local system activity only - no network indicators
SIEM Query:
EventID=4672 (Special privileges assigned) OR EventID=4688 (Process creation) with privileged accounts on affected systems