CVE-2024-8933
📋 TL;DR
This vulnerability allows attackers positioned within the same logical network to intercept password hashes during project file transfers to/from Schneider Electric controllers. Successful exploitation could lead to denial of service and compromise of controller confidentiality and integrity. Organizations using affected Schneider Electric industrial control systems are at risk.
💻 Affected Systems
- Schneider Electric EcoStruxure Control Expert
- Schneider Electric Modicon M580
- Schneider Electric Modicon M340
- Schneider Electric Modicon Quantum
⚠️ 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
Attackers gain password hashes, crack them to obtain credentials, take full control of industrial controllers, disrupt operations, and potentially cause physical damage or safety incidents.
Likely Case
Attackers intercept password hashes, crack weaker ones, gain unauthorized access to controllers, modify configurations, and cause operational disruptions.
If Mitigated
With proper network segmentation and monitoring, attackers cannot reach the logical network, preventing exploitation entirely.
🎯 Exploit Status
Exploitation requires network positioning and timing during legitimate file transfers. No public exploit code available as of advisory publication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to SEVD-2024-317-02 for specific product version updates
Vendor Advisory: https://download.schneider-electric.com/doc/SEVD-2024-317-02/SEVD-2024-317-02.pdf
Restart Required: Yes
Instructions:
1. Download appropriate firmware/software updates from Schneider Electric
2. Apply updates to affected controllers and engineering workstations
3. Restart systems as required
4. Verify integrity of project files post-update
🔧 Temporary Workarounds
Network Segmentation
allIsolate control system networks from other networks using firewalls and VLANs
Encrypted Communication Channels
allUse VPNs or encrypted tunnels for all engineering workstation to controller communications
🧯 If You Can't Patch
- Implement strict network segmentation to prevent unauthorized access to control system networks
- Monitor network traffic for unauthorized access attempts and implement intrusion detection
🔍 How to Verify
Check if Vulnerable:
Check if using affected Schneider Electric products and versions listed in SEVD-2024-317-02 advisoryCheck Version:
Check version through Schneider Electric engineering software interface or controller web interfaceVerify Fix Applied:
Verify installed firmware/software versions match patched versions in vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unauthorized network connections to controllers
- Multiple failed authentication attempts
- Unusual project file transfer patterns
Network Indicators:
- Unusual traffic patterns between engineering workstations and controllers
- Suspicious network positioning attempts
SIEM Query:
source_ip IN (engineering_workstation_ips) AND dest_ip IN (controller_ips) AND protocol IN (industrial_protocols) AND bytes_transferred > threshold