CVE-2025-27672
📋 TL;DR
This vulnerability allows attackers to bypass OAuth authentication in Vasion Print (formerly PrinterLogic) systems, potentially gaining unauthorized access to administrative functions. It affects organizations using Vasion Print Virtual Appliance Host versions before 22.0.843 and Application versions before 20.0.1923. The high CVSS score indicates critical severity requiring immediate attention.
💻 Affected Systems
- Vasion Print
- PrinterLogic Virtual Appliance
📦 What is this software?
Vasion Print by Printerlogic
Virtual Appliance by Printerlogic
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to take over the print management system, deploy malicious print drivers, intercept print jobs containing sensitive data, and pivot to other network systems.
Likely Case
Unauthorized administrative access leading to configuration changes, installation of malicious print drivers, and potential data exfiltration through print job interception.
If Mitigated
Limited impact if proper network segmentation, monitoring, and authentication controls are in place, though authentication bypass remains a significant concern.
🎯 Exploit Status
The CWE-287 (Improper Authentication) classification suggests authentication bypass is possible without credentials. No public exploit code has been identified at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Virtual Appliance Host 22.0.843 or later, Application 20.0.1923 or later
Vendor Advisory: https://help.printerlogic.com/saas/Print/Security/Security-Bulletins.htm
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Download and install Virtual Appliance Host 22.0.843 or later. 3. Update Application to 20.0.1923 or later. 4. Restart the virtual appliance. 5. Verify OAuth functionality post-update.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to the Vasion Print appliance to only trusted internal networks
Authentication Enhancement
allImplement additional authentication layers such as VPN or network-level authentication before reaching the appliance
🧯 If You Can't Patch
- Isolate the Vasion Print appliance from internet access and restrict to internal network only
- Implement strict network monitoring and alerting for unusual authentication attempts or administrative changes
🔍 How to Verify
Check if Vulnerable:
Check the Virtual Appliance Host version in the admin interface. If version is below 22.0.843 and Application version is below 20.0.1923, the system is vulnerable.Check Version:
Check via Vasion Print admin web interface under System Information or SettingsVerify Fix Applied:
Verify Virtual Appliance Host version is 22.0.843 or higher and Application version is 20.0.1923 or higher in the admin interface. Test OAuth authentication flows.📡 Detection & Monitoring
Log Indicators:
- Failed OAuth authentication attempts followed by successful administrative actions
- Unusual administrative login patterns or source IPs
- Configuration changes from unexpected users
Network Indicators:
- HTTP requests bypassing OAuth endpoints
- Unusual traffic patterns to administrative interfaces
- Authentication requests from unexpected sources
SIEM Query:
source="vasion-print" AND (event_type="auth_bypass" OR (auth_result="success" AND user="unknown"))