CVE-2024-6407
📋 TL;DR
CVE-2024-6407 is a critical information disclosure vulnerability in Schneider Electric devices that allows attackers to extract credentials by sending specially crafted messages. This affects Schneider Electric industrial control systems and could expose authentication credentials to unauthorized parties.
💻 Affected Systems
- Schneider Electric industrial control systems (specific models not detailed in provided references)
📦 What is this software?
Whc 5918a Firmware by Schneider Electric
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative credentials, leading to complete system compromise, data theft, operational disruption, and potential safety hazards in industrial environments.
Likely Case
Credential harvesting leading to unauthorized access, data exfiltration, and lateral movement within industrial networks.
If Mitigated
Limited impact with proper network segmentation, credential rotation, and monitoring in place.
🎯 Exploit Status
CVSS 9.8 suggests trivial exploitation without authentication. No public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-191-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2024-191-01.pdf
Restart Required: Yes
Instructions:
1. Review Schneider Electric advisory SEVD-2024-191-01. 2. Identify affected devices. 3. Apply vendor-provided firmware updates. 4. Restart devices as required. 5. Verify patch installation.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices from untrusted networks and internet access
Access Control Lists
allImplement strict network ACLs to limit communication to trusted sources only
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to isolate vulnerable devices
- Monitor network traffic for suspicious message patterns and credential extraction attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Schneider Electric advisory SEVD-2024-191-01Check Version:
Device-specific command (consult Schneider Electric documentation for exact command)Verify Fix Applied:
Verify firmware version has been updated to patched version specified in vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unusual message patterns to device ports
- Failed authentication attempts following suspicious traffic
- Credential-related log entries
Network Indicators:
- Suspicious crafted messages to device ports
- Unexpected credential transmission in network traffic
SIEM Query:
source_ip=external AND dest_port=[device_port] AND protocol=TCP AND payload_contains=suspicious_pattern