CVE-2024-12054
📋 TL;DR
This authentication bypass vulnerability in ZF Roll Stability Support Plus (RSSPlus) allows attackers to remotely access diagnostic functions intended only for authorized workshop technicians. Attackers can potentially degrade system performance or erase software, though the vehicle remains in a safe state. Affected systems include vehicles with vulnerable ZF RSSPlus components.
💻 Affected Systems
- ZF Roll Stability Support Plus (RSSPlus)
⚠️ 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
Attacker remotely erases critical software components, causing system degradation that requires physical repair and impacts vehicle availability.
Likely Case
Unauthorized diagnostic access leading to performance degradation or nuisance-level disruptions requiring system resets.
If Mitigated
Limited impact with proper network segmentation and access controls preventing unauthorized diagnostic access.
🎯 Exploit Status
Exploitation requires specialized RF equipment or access to telematics devices; targets deterministic SecurityAccess service seeds.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-25-021-03
Restart Required: Yes
Instructions:
1. Contact ZF or vehicle manufacturer for specific firmware updates 2. Apply firmware patches to affected RSSPlus systems 3. Restart affected systems after patching
🔧 Temporary Workarounds
Network Segmentation
allIsolate diagnostic networks from production vehicle networks
Access Control
allImplement strict physical and network access controls for diagnostic interfaces
🧯 If You Can't Patch
- Implement network segmentation to isolate diagnostic interfaces
- Deploy physical security controls to prevent unauthorized access to vehicle diagnostic ports
🔍 How to Verify
Check if Vulnerable:
Check with vehicle manufacturer or ZF for specific firmware versions and vulnerability assessmentCheck Version:
Manufacturer-specific diagnostic tool commands (consult vehicle service documentation)Verify Fix Applied:
Verify firmware version matches patched version from manufacturer and test diagnostic access controls📡 Detection & Monitoring
Log Indicators:
- Unauthorized diagnostic session attempts
- Multiple failed SecurityAccess attempts
- Unexpected diagnostic function calls
Network Indicators:
- Unusual diagnostic protocol traffic from unauthorized sources
- RF-based diagnostic attempts
SIEM Query:
source:diagnostic_protocol AND (event_type:authentication_bypass OR failed_attempts > threshold)