CVE-2024-23984
📋 TL;DR
This vulnerability in Intel processors' RAPL (Running Average Power Limit) interface allows a privileged user to potentially disclose information through local access. It affects certain Intel processors where an observable discrepancy in the RAPL interface could leak sensitive data. Only systems with affected Intel processors and privileged local users are impacted.
💻 Affected Systems
- Intel processors with RAPL interface
⚠️ 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 system information, potentially including power consumption data that might reveal cryptographic operations or other protected activities.
Likely Case
Information disclosure of power management data that could be used for side-channel analysis or fingerprinting systems.
If Mitigated
Minimal impact with proper privilege separation and monitoring of local user activities.
🎯 Exploit Status
Requires local privileged access and knowledge of RAPL interface exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Microcode updates from Intel, OS-specific patches (Debian security updates mentioned)
Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01103.html
Restart Required: Yes
Instructions:
1. Check Intel advisory for specific processor updates. 2. Apply microcode updates from Intel. 3. Apply OS security updates (e.g., Debian security updates). 4. Reboot system.
🔧 Temporary Workarounds
Restrict local privileged access
allLimit local users with privileged access to minimize attack surface
Monitor privileged user activities
linuxImplement auditing of privileged user actions on affected systems
auditctl -a always,exit -F arch=b64 -S all -F uid=0
🧯 If You Can't Patch
- Implement strict privilege separation and least privilege principles
- Monitor systems for unusual privileged user activities and power management anomalies
🔍 How to Verify
Check if Vulnerable:
Check Intel processor model and microcode version against Intel advisory. On Linux: cat /proc/cpuinfo | grep 'model name' and dmesg | grep microcodeCheck Version:
On Linux: uname -a; cat /proc/cpuinfo | grep 'model name'; dmesg | grep microcodeVerify Fix Applied:
Verify microcode version updated and OS security patches applied. On Debian: apt list --installed | grep -i security📡 Detection & Monitoring
Log Indicators:
- Unusual privileged user activities
- Suspicious power management interface access
Network Indicators:
- None - local access only vulnerability
SIEM Query:
source="system_logs" AND (event_type="privileged_access" OR process_name="rapl")