CVE-2025-34211
📋 TL;DR
Vasion Print (formerly PrinterLogic) appliances contain a hardcoded private SSL key and matching certificate stored in cleartext. This allows attackers with container-level access to decrypt TLS traffic, perform man-in-the-middle attacks, or forge certificates to impersonate the appliance's web UI. All Vasion Print installations using affected versions are vulnerable.
💻 Affected Systems
- Vasion Print Virtual Appliance Host
- Vasion Print Application
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all Vasion Print deployments worldwide, allowing credential interception, service impersonation, and unrestricted access to any systems trusting the certificate.
Likely Case
Attackers with initial access to a vulnerable appliance can decrypt internal TLS traffic, intercept admin credentials, and pivot to other systems.
If Mitigated
Limited to attackers who already have container-level access to the appliance, but still enables significant lateral movement.
🎯 Exploit Status
Requires container-level access first, but once obtained, exploitation is trivial - simply reading cleartext files.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Virtual Appliance Host 22.0.1049 or later, Application 20.0.2786 or later
Vendor Advisory: https://help.printerlogic.com/saas/Print/Security/Security-Bulletins.htm
Restart Required: No
Instructions:
1. Update to Virtual Appliance Host version 22.0.1049 or later. 2. Update to Application version 20.0.2786 or later. 3. Verify the hardcoded key has been replaced with unique certificates.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Vasion Print appliances from sensitive networks and restrict access to management interfaces.
Access Control Hardening
allImplement strict access controls to prevent unauthorized container-level access to appliances.
🧯 If You Can't Patch
- Implement network monitoring for unusual TLS traffic patterns or certificate mismatches
- Rotate all credentials that may have been exposed through the appliance's web UI
🔍 How to Verify
Check if Vulnerable:
Check appliance version in web UI or via SSH if accessible. Versions below Virtual Appliance Host 22.0.1049 or Application 20.0.2786 are vulnerable.Check Version:
Check web UI admin panel or consult vendor documentation for version checking commands.Verify Fix Applied:
Verify version is at or above patched versions. Check that SSL certificates are now unique per appliance and not the hardcoded pl‑local.com certificate.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to certificate files
- Multiple failed authentication attempts followed by successful access
Network Indicators:
- TLS traffic showing certificate mismatches
- Unexpected connections using pl‑local.com certificates
SIEM Query:
source="vasion-print" AND (event_type="file_access" AND file_path="*cert*" OR file_path="*key*")🔗 References
- https://help.printerlogic.com/saas/Print/Security/Security-Bulletins.htm
- https://help.printerlogic.com/va/Print/Security/Security-Bulletins.htm
- https://pierrekim.github.io/blog/2025-04-08-vasion-printerlogic-83-vulnerabilities.html#va-hardcoded-ssl-private-key
- https://www.vulncheck.com/advisories/vasion-print-printerlogic-hardcoded-ssl-certificate-and-private-keys
- https://pierrekim.github.io/blog/2025-04-08-vasion-printerlogic-83-vulnerabilities.html#va-hardcoded-ssl-private-key
