CVE-2025-55067
📋 TL;DR
The TLS4B ATG system suffers from a Year 2038 problem where Unix time values exceeding the 2038 epoch cause the system clock to reset to 1901, leading to authentication failures and disruption of core functionalities. This vulnerability affects systems using TLS4B ATG software that haven't been patched for the 2038 epoch rollover issue. Attackers could manipulate system time to trigger denial of service conditions.
💻 Affected Systems
- TLS4B ATG system
⚠️ 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
Complete system lockout preventing all administrative access, operational timer failures causing safety system malfunctions, and corrupted historical data making forensic analysis impossible.
Likely Case
Authentication failures preventing legitimate user access, disruption of leak detection systems, and corrupted log entries affecting compliance and monitoring.
If Mitigated
Temporary service disruption during time manipulation attempts with quick recovery through system restart and time correction.
🎯 Exploit Status
Exploitation requires ability to manipulate system time, which typically requires some level of access or physical proximity to the system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://www.veeder.com/us/network-security-reminder
Restart Required: Yes
Instructions:
1. Review vendor advisory at provided URL. 2. Download and apply the official patch from Veeder. 3. Restart the TLS4B ATG system. 4. Verify system time handling functions correctly.
🔧 Temporary Workarounds
System Time Monitoring and Correction
allImplement continuous monitoring of system time and automated correction if time jumps are detected
# Use NTP with strict time validation
ntpd -g -x -c /etc/ntp.conf
Access Control Hardening
allRestrict physical and network access to time configuration interfaces
# Example: Restrict NTP configuration access
chmod 600 /etc/ntp.conf
# Restrict physical console access
🧯 If You Can't Patch
- Implement strict physical security controls to prevent unauthorized time manipulation
- Deploy network segmentation to isolate vulnerable systems from potential attackers
🔍 How to Verify
Check if Vulnerable:
Check system documentation for 32-bit time_t usage and test with future date simulation if possible in test environmentCheck Version:
Consult system documentation or vendor for version checking procedure specific to TLS4B ATGVerify Fix Applied:
Apply patch and test system behavior with simulated dates beyond January 19, 2038 in a controlled test environment📡 Detection & Monitoring
Log Indicators:
- System time reset events
- Authentication failures with timestamp anomalies
- Leak detection system termination logs
Network Indicators:
- Unusual NTP traffic patterns
- Time synchronization protocol anomalies
SIEM Query:
source="tls4b_system" AND (event_type="time_reset" OR auth_failure="true" AND timestamp<"1901-12-13")