CVE-2025-27667: Vasion Print Information Disclosure Flaw

CVE-2025-27667 Overview

CVE-2025-27667 is an information disclosure vulnerability affecting Vasion Print (formerly PrinterLogic) that allows administrative user email enumeration. This vulnerability exists in versions prior to Virtual Appliance Host 22.0.843 and Application 20.0.1923, enabling unauthenticated attackers to enumerate valid administrative email addresses through inconsistent application responses.

Critical Impact

Unauthenticated attackers can enumerate administrative user email addresses, potentially enabling targeted phishing attacks, credential stuffing, or further exploitation of the print management infrastructure.

Affected Products

• Vasion Print (formerly PrinterLogic) Application versions before 20.0.1923
• PrinterLogic Virtual Appliance Host versions before 22.0.843
• PrinterLogic SaaS deployments running vulnerable versions

Discovery Timeline

• 2025-03-05 - CVE-2025-27667 published to NVD
• 2025-04-01 - Last updated in NVD database

Technical Details for CVE-2025-27667

Vulnerability Analysis

This vulnerability is classified under CWE-203 (Observable Discrepancy), which occurs when an application provides different responses based on whether a user exists or not, allowing attackers to determine valid accounts. In the context of Vasion Print, the application exposes administrative user email addresses through observable differences in response behavior when querying user-related endpoints.

The email enumeration flaw is particularly concerning in enterprise print management environments where administrative accounts typically have elevated privileges across the print infrastructure. Successful exploitation could provide attackers with a list of high-value targets for subsequent attacks.

Root Cause

The root cause of CVE-2025-27667 stems from improper implementation of user lookup functionality that fails to provide consistent responses regardless of whether a queried email address exists in the system. This observable discrepancy allows attackers to distinguish between valid and invalid administrative email addresses based on subtle differences in response content, timing, or HTTP status codes.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker can systematically probe the application with various email addresses and analyze the responses to build a list of valid administrative accounts. This attack vector is particularly effective when combined with common email patterns or leaked email lists.

The enumeration attack typically involves:

1. Sending requests to user-related endpoints with different email addresses
2. Analyzing response variations (error messages, response times, HTTP codes)
3. Cataloging confirmed valid administrative emails
4. Using gathered intelligence for targeted attacks such as spear-phishing or credential stuffing

Detection Methods for CVE-2025-27667

Indicators of Compromise

• Unusual volume of requests to authentication or user lookup endpoints from single IP addresses
• Sequential or pattern-based email address queries in web server logs
• Multiple failed authentication attempts following enumeration activity
• Requests containing common email patterns or dictionary-based usernames

Detection Strategies

• Implement rate limiting detection rules for user lookup and authentication endpoints
• Monitor for automated tools and scripts by analyzing User-Agent strings and request patterns
• Configure alerting for high-frequency requests to administrative user management interfaces
• Deploy web application firewall (WAF) rules to detect enumeration attempts

Monitoring Recommendations

• Enable detailed logging on Vasion Print administrative interfaces and authentication endpoints
• Establish baseline request patterns and alert on statistical anomalies
• Monitor for reconnaissance activities preceding credential-based attacks
• Correlate enumeration attempts with subsequent authentication failures

How to Mitigate CVE-2025-27667

Immediate Actions Required

• Upgrade Vasion Print Application to version 20.0.1923 or later
• Update Virtual Appliance Host to version 22.0.843 or later
• Review access logs for evidence of enumeration attempts
• Implement additional authentication controls for administrative accounts

Patch Information

Vasion (formerly PrinterLogic) has addressed this vulnerability in Virtual Appliance Host version 22.0.843 and Application version 20.0.1923. Organizations should consult the PrinterLogic Security Bulletin for detailed upgrade instructions and additional security guidance. The patch ensures consistent response behavior regardless of whether queried email addresses exist in the system.

Workarounds

• Implement IP-based access restrictions to administrative interfaces
• Deploy a web application firewall with rate limiting rules for authentication endpoints
• Configure CAPTCHA or challenge-response mechanisms on login pages
• Enable multi-factor authentication for all administrative accounts to reduce impact of enumerated credentials
• Consider network segmentation to limit exposure of administrative interfaces

# Configuration example - Implement rate limiting at the web server level
# For nginx - add to server block protecting administrative endpoints
limit_req_zone $binary_remote_addr zone=admin_limit:10m rate=5r/m;

location /admin/ {
    limit_req zone=admin_limit burst=10 nodelay;
    limit_req_status 429;
    # Additional security headers
    add_header X-Content-Type-Options nosniff;
    add_header X-Frame-Options DENY;
}