CVE-2024-43099
📋 TL;DR
This vulnerability allows session hijacking in industrial control systems by capturing session keys used between host PCs and PLCs. Attackers can inject malicious traffic into authenticated sessions by spoofing IP and MAC addresses. This affects systems using vulnerable session management mechanisms in industrial environments.
💻 Affected Systems
- Specific products not listed in advisory - check vendor documentation
⚠️ 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 compromise of industrial control systems allowing unauthorized command injection, process manipulation, or safety system disruption
Likely Case
Unauthorized access to PLC operations, data manipulation, or process interference in industrial environments
If Mitigated
Limited impact with proper network segmentation, monitoring, and session security controls
🎯 Exploit Status
Requires session key capture and network spoofing capabilities
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - check vendor-specific updates
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-24-256-17
Restart Required: Yes
Instructions:
1. Consult vendor advisory for specific patch information
2. Apply vendor-provided security updates
3. Restart affected systems
4. Verify session security mechanisms
🔧 Temporary Workarounds
Network Segmentation
allIsolate industrial control systems from general network traffic
Session Encryption Enhancement
allImplement stronger session encryption and key rotation
🧯 If You Can't Patch
- Implement strict network access controls and monitoring
- Use physical isolation for critical industrial control networks
🔍 How to Verify
Check if Vulnerable:
Check system logs for session key exposure or consult vendor vulnerability assessment toolsCheck Version:
Vendor-specific version check commands - refer to system documentationVerify Fix Applied:
Verify session management mechanisms are using secure protocols and key rotation📡 Detection & Monitoring
Log Indicators:
- Multiple session initiation attempts
- Unusual IP/MAC address combinations
- Session key reuse or exposure
Network Indicators:
- Spoofed IP/MAC traffic to PLCs
- Unauthorized session injection attempts
SIEM Query:
source_ip != dest_ip AND mac_address_changed AND session_key_reused