CVE-2021-0133
📋 TL;DR
This vulnerability in Intel Security Library allows authenticated users to perform key exchanges without proper entity authentication, potentially enabling privilege escalation through network access. It affects systems running Intel Security Library versions before 3.3 that use the vulnerable key exchange functionality.
💻 Affected Systems
- Intel Security Library
📦 What is this software?
Secl Dc by Intel
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could escalate privileges to gain administrative control over affected systems, potentially compromising the entire system and accessing sensitive data.
Likely Case
Authenticated users could gain elevated privileges beyond their intended access level, allowing unauthorized access to protected resources or system functions.
If Mitigated
With proper network segmentation and access controls, the impact would be limited to the affected network segment and authenticated users only.
🎯 Exploit Status
Requires authenticated access and network connectivity to the vulnerable system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.3 or later
Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00521.html
Restart Required: Yes
Instructions:
1. Download Intel Security Library version 3.3 or later from Intel's official website. 2. Stop all services using the library. 3. Install the updated version. 4. Restart affected services and systems.
🔧 Temporary Workarounds
Network Segmentation
allIsolate systems running vulnerable Intel Security Library versions from untrusted networks
Access Control Restrictions
allLimit authenticated user access to systems running vulnerable versions
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Apply principle of least privilege to limit authenticated user access
🔍 How to Verify
Check if Vulnerable:
Check Intel Security Library version using system package manager or by examining installed softwareCheck Version:
On Linux: rpm -qa | grep -i intel-security-library or dpkg -l | grep -i intel-security-libraryVerify Fix Applied:
Verify Intel Security Library version is 3.3 or higher after update📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts
- Unexpected privilege escalation events
- Abnormal key exchange activity
Network Indicators:
- Suspicious network traffic to/from systems running Intel Security Library
- Unexpected key exchange patterns
SIEM Query:
source="intel_security_library" AND (event_type="key_exchange" OR event_type="authentication")