CVE-2025-30234
📋 TL;DR
SmartOS contains static SSH host keys in a specific Debian 12 LX zone image, allowing attackers to impersonate legitimate hosts and conduct man-in-the-middle attacks. This affects Triton Data Center deployments and other products using the vulnerable 60f76fd2-143f-4f57-819b-1ae32684e81b image. Systems deployed from this image have predictable SSH keys that can be exploited for unauthorized access.
💻 Affected Systems
- SmartOS
- Triton Data Center
⚠️ 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 intercept SSH connections, decrypt traffic, inject malicious commands, and gain full administrative access to affected systems, potentially compromising entire Triton Data Center deployments.
Likely Case
Man-in-the-middle attacks on SSH connections leading to credential theft, data interception, and unauthorized access to systems using the vulnerable image.
If Mitigated
Limited impact with proper network segmentation, SSH key rotation, and monitoring of SSH authentication attempts.
🎯 Exploit Status
Exploitation requires network access to intercept SSH traffic or knowledge of the static keys; no authentication bypass needed once keys are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Updated image with regenerated SSH host keys
Vendor Advisory: https://security.tritondatacenter.com/tps-2025-002/
Restart Required: No
Instructions:
1. Stop using the vulnerable image (60f76fd2-143f-4f57-819b-1ae32684e81b). 2. Deploy new zones from updated images. 3. For existing zones, regenerate SSH host keys using 'dpkg-reconfigure openssh-server' or similar commands. 4. Update authorized_keys files on connecting clients.
🔧 Temporary Workarounds
Regenerate SSH host keys manually
allManually regenerate SSH host keys on affected systems to replace static keys with unique ones.
sudo rm /etc/ssh/ssh_host_*
sudo dpkg-reconfigure openssh-server
sudo systemctl restart ssh
Implement SSH certificate authentication
allReplace key-based authentication with certificate-based authentication to mitigate static key risks.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems
- Monitor SSH authentication logs for unusual patterns and implement intrusion detection
🔍 How to Verify
Check if Vulnerable:
Check if system uses image UUID 60f76fd2-143f-4f57-819b-1ae32684e81b via 'vmadm list' or similar commands, and verify SSH host key fingerprints match known static keys.Check Version:
ssh-keyscan localhost | ssh-keygen -lf -Verify Fix Applied:
Confirm SSH host keys have been regenerated by checking key fingerprints are unique and don't match known static keys from advisory.📡 Detection & Monitoring
Log Indicators:
- Multiple failed SSH authentication attempts
- SSH connections from unexpected sources
- Changes in SSH key fingerprints
Network Indicators:
- Unusual SSH traffic patterns
- Man-in-the-middle attack signatures in network monitoring
SIEM Query:
source="ssh_logs" AND (event="Failed password" OR event="Invalid user") | stats count by src_ip