CVE-2024-6758
📋 TL;DR
This vulnerability allows remote attackers with low privileges to save unauthorized protection assignments in Sprecher Automation SPRECON-E systems. This affects all installations running versions below 8.71j, potentially enabling privilege escalation and unauthorized configuration changes.
💻 Affected Systems
- Sprecher Automation SPRECON-E
📦 What is this software?
Sprecon E Ap 2200 Firmware by Sprecher Automation
Sprecon E C Firmware by Sprecher Automation
Sprecon E Cp 2131 Firmware by Sprecher Automation
Sprecon E Cp 2330 Firmware by Sprecher Automation
Sprecon E Cp 2500 Firmware by Sprecher Automation
Sprecon E P Dd6 2 Firmware by Sprecher Automation
Sprecon E P Dl6 1 Firmware by Sprecher Automation
Sprecon E P Dq6 1 Firmware by Sprecher Automation
Sprecon E P Ds6 0 Firmware by Sprecher Automation
Sprecon E T3 Ax 3110 Firmware by Sprecher Automation
Sprecon E T3 Firmware by Sprecher Automation
Sprecon Edir Firmware by Sprecher Automation
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify critical protection settings, potentially disabling safety mechanisms or causing system malfunctions in industrial control environments.
Likely Case
Unauthorized users gain elevated privileges to modify system configurations they shouldn't have access to, potentially affecting system reliability and safety.
If Mitigated
With proper access controls and network segmentation, impact is limited to unauthorized configuration changes within the affected user's scope.
🎯 Exploit Status
Exploitation requires authenticated access with low privileges. The vulnerability is in the authorization logic, making exploitation straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.71j
Vendor Advisory: https://www.sprecher-automation.com/fileadmin/itSecurity/PDF/SPR-2407171_de.pdf
Restart Required: Yes
Instructions:
1. Download SPRECON-E version 8.71j from official vendor sources. 2. Backup current configuration. 3. Install the update following vendor documentation. 4. Restart the SPRECON-E service/system. 5. Verify functionality and restored configurations.
🔧 Temporary Workarounds
Restrict User Privileges
allLimit low-privilege user access to protection assignment functions
Network Segmentation
allIsolate SPRECON-E systems from general network access
🧯 If You Can't Patch
- Implement strict access controls and audit all user permissions
- Monitor for unauthorized configuration changes and implement change control procedures
🔍 How to Verify
Check if Vulnerable:
Check SPRECON-E version in system information or about dialog. If version is below 8.71j, system is vulnerable.Check Version:
Check Help > About in SPRECON-E interface or consult system documentation for version verificationVerify Fix Applied:
Verify version shows 8.71j or higher in system information. Test that low-privilege users cannot save unauthorized protection assignments.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to protection assignment functions
- Configuration changes from low-privilege accounts
Network Indicators:
- Unusual authentication patterns to SPRECON-E systems
- Configuration change requests from unexpected sources
SIEM Query:
source="sprecon-e" AND (event_type="config_change" AND user_privilege="low")