CVE-2025-27671: Vasion Print Auth Bypass Vulnerability

CVE-2025-27671 Overview

CVE-2025-27671 is a critical device impersonation vulnerability affecting Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 and Application 20.0.1923. This flaw allows attackers to impersonate legitimate printing devices within the network, potentially enabling unauthorized access to sensitive print jobs and the broader network infrastructure.

Critical Impact

Successful exploitation allows attackers to impersonate trusted printing devices, potentially intercepting confidential documents, injecting malicious content into print streams, and establishing persistence within enterprise print infrastructure.

Affected Products

• Vasion Print (formerly PrinterLogic) Application versions before 20.0.1923
• PrinterLogic Virtual Appliance Host versions before 22.0.843
• PrinterLogic Virtual Appliance deployments with unpatched components

Discovery Timeline

• 2025-03-05 - CVE-2025-27671 published to NVD
• 2025-04-01 - Last updated in NVD database

Technical Details for CVE-2025-27671

Vulnerability Analysis

This vulnerability is classified under CWE-290 (Authentication Bypass by Spoofing), indicating a fundamental weakness in how the Vasion Print system authenticates and validates device identities. The flaw allows malicious actors to bypass authentication mechanisms by spoofing the identity of legitimate printing devices within the managed print environment.

The vulnerability identifier OVE-20230524-0015 suggests this issue was tracked internally and relates to insufficient validation of device credentials or identity tokens during the device registration and communication processes. Without proper device authentication, an attacker can register a rogue device or impersonate an existing trusted printer, gaining unauthorized access to the print management infrastructure.

Enterprise print management systems like Vasion Print handle sensitive documents across organizations, making device impersonation particularly dangerous. An attacker exploiting this vulnerability could intercept confidential print jobs, modify document contents before printing, or use the compromised position to pivot to other network resources.

Root Cause

The root cause stems from inadequate authentication controls for device identity verification within the Vasion Print platform. The system fails to properly validate that devices claiming a particular identity are actually the legitimate devices they purport to be. This authentication bypass by spoofing (CWE-290) allows malicious actors to forge device credentials or identity tokens, enabling them to masquerade as trusted printers within the print management ecosystem.

Attack Vector

The attack is network-based and requires no authentication or user interaction, making it highly accessible to attackers with network access to the Vasion Print infrastructure. An attacker can exploit this vulnerability by:

1. Identifying target printers managed by Vasion Print within the network
2. Crafting spoofed device identity credentials or tokens
3. Registering a malicious device with the identity of a legitimate printer
4. Intercepting print jobs destined for the impersonated device
5. Potentially injecting malicious content or pivoting to other systems

The vulnerability requires network access to the print management infrastructure but does not require any prior authentication or privileges, significantly lowering the barrier to exploitation.

Detection Methods for CVE-2025-27671

Indicators of Compromise

• Unexpected device registrations or re-registrations in the Vasion Print management console
• Multiple devices claiming the same identity or conflicting device metadata
• Anomalous network traffic patterns between print clients and unexpected endpoints
• Print job routing changes or failed print jobs that were reportedly successful

Detection Strategies

• Monitor Vasion Print device registration logs for duplicate device identities or unexpected registration events
• Implement network segmentation monitoring to detect unauthorized devices communicating with print management servers
• Deploy endpoint detection solutions to identify rogue processes attempting to impersonate printing services
• Configure alerts for changes to printer configurations or device trust relationships

Monitoring Recommendations

• Enable verbose logging on Vasion Print Virtual Appliance components and forward logs to SIEM
• Establish baseline device inventory and alert on deviations from known device populations
• Monitor network traffic for anomalous printing protocol communications (IPP, LPD, raw port 9100)
• Implement periodic device attestation checks to verify printer identity and integrity

How to Mitigate CVE-2025-27671

Immediate Actions Required

• Upgrade Vasion Print Virtual Appliance Host to version 22.0.843 or later immediately
• Upgrade Vasion Print Application to version 20.0.1923 or later
• Audit current device registrations and remove any suspicious or unrecognized devices
• Review access logs for evidence of exploitation prior to patching

Patch Information

Vasion has released security updates addressing this vulnerability. Organizations should upgrade to Virtual Appliance Host version 22.0.843 or later and Application version 20.0.1923 or later. The official security bulletin is available through the PrinterLogic Security Bulletins page.

Workarounds

• Implement strict network segmentation to isolate print management infrastructure from untrusted network segments
• Enable additional authentication layers where supported by the Vasion Print configuration
• Deploy network access control (NAC) to restrict which devices can communicate with print servers
• Monitor and restrict administrative access to the Vasion Print management console

# Network segmentation example - restrict print server access
# Add firewall rules to limit access to Vasion Print Virtual Appliance
iptables -A INPUT -p tcp --dport 443 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP

# Enable logging for device registration attempts
# Configure in Vasion Print admin console under System > Logging
# Set logging level to "Verbose" for Security events