CVE-2025-34202
📋 TL;DR
This vulnerability exposes Docker container networks in Vasion Print (formerly PrinterLogic) deployments, allowing attackers on the same network segment to directly access internal services like HTTP APIs, Redis, and MySQL. Many of these services lack authentication or have known vulnerabilities, enabling lateral movement and system compromise. Affected systems include Virtual Appliance Host prior to 25.2.169 and Application prior to 25.2.1518 in both VA and SaaS deployments.
💻 Affected Systems
- Vasion Print Virtual Appliance Host
- Vasion Print Application
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise leading to remote code execution, data exfiltration, and complete control over the printing infrastructure and connected systems.
Likely Case
Lateral movement within the network, unauthorized access to sensitive data, and potential compromise of internal services through exposed container endpoints.
If Mitigated
Limited impact if network segmentation prevents access to the vulnerable segment, though internal services remain exposed to authorized network users.
🎯 Exploit Status
Exploitation requires network access to the same L2 segment or ability to add routes using the appliance as a gateway. Many exposed services lack authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Virtual Appliance Host 25.2.169 or later, Application 25.2.1518 or later
Vendor Advisory: https://help.printerlogic.com/saas/Print/Security/Security-Bulletins.htm
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Update to Virtual Appliance Host 25.2.169+ or Application 25.2.1518+. 3. Restart the appliance. 4. Verify network isolation is properly enforced.
🔧 Temporary Workarounds
Network Segmentation
allIsolate the Vasion Print appliance on a dedicated VLAN with strict access controls to prevent unauthorized network access.
Firewall Rules
linuxImplement firewall rules to block access to Docker container IP ranges from unauthorized network segments.
iptables -A INPUT -s <unauthorized_network> -d <docker_network_range> -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the appliance from other systems
- Deploy network monitoring and intrusion detection for suspicious access to container IP ranges
🔍 How to Verify
Check if Vulnerable:
Check if Docker container IPs are reachable from external network segments using nmap or similar tools: nmap -sP <docker_network_range>Check Version:
Check appliance web interface or admin console for version informationVerify Fix Applied:
After patching, verify container IPs are no longer accessible from external segments and check version meets minimum requirements.📡 Detection & Monitoring
Log Indicators:
- Unusual access to internal Docker container IPs
- Authentication failures on internal services
- Unexpected network connections to container ports
Network Indicators:
- Traffic to Docker internal IP ranges from external segments
- Port scans targeting container IP addresses
- Unauthorized access attempts to Redis/MySQL/HTTP APIs
SIEM Query:
source_ip IN (external_networks) AND dest_ip IN (docker_network_range)🔗 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-insecure-access-docker-instances-from-wan
- https://www.vulncheck.com/advisories/vasion-print-printerlogic-insecure-access-to-docker-instances-wan
