CVE-2020-24453
📋 TL;DR
This vulnerability in Intel EPID SDK allows authenticated local users to escalate privileges through improper input validation. It affects systems using Intel EPID SDK versions before 8.0 for cryptographic attestation and identity management.
💻 Affected Systems
- Intel EPID SDK
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker gains full system control, potentially compromising the entire system and accessing sensitive data.
Likely Case
Local authenticated user escalates to higher privileges, enabling unauthorized access to protected resources.
If Mitigated
With proper access controls and patching, impact is limited to isolated systems with minimal data exposure.
🎯 Exploit Status
Requires local authenticated access; no public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Intel EPID SDK 8.0 or later
Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00445.html
Restart Required: Yes
Instructions:
1. Download Intel EPID SDK version 8.0 or later from Intel's website. 2. Uninstall previous EPID SDK versions. 3. Install the updated SDK. 4. Restart affected systems. 5. Recompile applications using the updated SDK.
🔧 Temporary Workarounds
Restrict local access
allLimit local user access to systems running vulnerable EPID SDK
Disable EPID services
allTemporarily disable EPID-related services if not essential
systemctl stop epid-service
sc stop "Intel EPID Service"
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges
- Monitor systems for unusual privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check EPID SDK version; if below 8.0, system is vulnerableCheck Version:
Check SDK documentation or installation directory for version informationVerify Fix Applied:
Verify EPID SDK version is 8.0 or higher and applications are recompiled with updated SDK📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Failed EPID authentication attempts
- Unusual local user activity
Network Indicators:
- None - local access only vulnerability
SIEM Query:
EventID=4672 OR EventID=4688 on Windows systems with EPID SDK