CVE-2024-41717
📋 TL;DR
CVE-2024-41717 is a path traversal vulnerability in Kieback & Peter's DDC4000 series building automation controllers that allows unauthenticated attackers to read arbitrary files on the system. This affects organizations using these controllers for HVAC and building management systems, potentially exposing sensitive configuration data and credentials.
💻 Affected Systems
- Kieback & Peter DDC4000 series building automation controllers
⚠️ 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 could read sensitive files including configuration files, credentials, and system files, potentially leading to full system compromise and lateral movement within building automation networks.
Likely Case
Unauthenticated attackers reading configuration files to gather intelligence about the building automation system, potentially discovering credentials for further attacks.
If Mitigated
Limited exposure with proper network segmentation preventing external access to vulnerable controllers.
🎯 Exploit Status
Path traversal vulnerabilities typically have low exploitation complexity, especially when unauthenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact vendor for specific patched versions
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-24-291-05
Restart Required: Yes
Instructions:
1. Contact Kieback & Peter for patched firmware. 2. Backup current configuration. 3. Apply firmware update following vendor instructions. 4. Restart controller. 5. Verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate DDC4000 controllers from untrusted networks and internet access
Access Control Lists
allImplement strict firewall rules to limit access to controller management interfaces
🧯 If You Can't Patch
- Implement strict network segmentation to isolate controllers from untrusted networks
- Monitor network traffic to DDC4000 controllers for suspicious file access patterns
🔍 How to Verify
Check if Vulnerable:
Check if DDC4000 controller is accessible and test for path traversal using controlled testing methodsCheck Version:
Check controller web interface or use vendor-specific tools to query firmware versionVerify Fix Applied:
Verify firmware version matches vendor's patched version and test that path traversal attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in controller logs
- Multiple failed or successful attempts to access system files
Network Indicators:
- HTTP requests with directory traversal sequences (../, ..\) to controller
- Unusual traffic patterns to controller management interface
SIEM Query:
source="ddc4000" AND (uri="*../*" OR uri="*..\*")