CVE-2025-27673: Vasion Print Information Disclosure Flaw

CVE-2025-27673 Overview

CVE-2025-27673 is a critical information disclosure vulnerability affecting Vasion Print (formerly PrinterLogic) Virtual Appliance Host and Application components. The vulnerability allows sensitive cookie data to be exposed in HTTP response bodies, potentially enabling session hijacking or credential theft by unauthorized actors. This issue is tracked as OVE-20230524-0017.

Critical Impact

Authentication cookies returned in response bodies can be intercepted by attackers, enabling session hijacking and unauthorized access to enterprise print management infrastructure.

Affected Products

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

Discovery Timeline

• 2025-03-05 - CVE-2025-27673 published to NVD
• 2025-04-01 - Last updated in NVD database

Technical Details for CVE-2025-27673

Vulnerability Analysis

This vulnerability falls under CWE-539 (Use of Persistent Cookies Containing Sensitive Information) and represents an information exposure flaw in how Vasion Print handles authentication cookies. The application improperly includes cookie data within HTTP response bodies, which violates secure cookie handling practices.

When cookies are returned in response bodies instead of being properly handled through HTTP headers with appropriate security flags, they become visible to client-side code and can be captured through various interception techniques. This exposure is particularly dangerous in enterprise environments where print management systems often have elevated network access and handle sensitive document workflows.

The vulnerability can be exploited remotely without any authentication requirements or user interaction, making it a high-priority remediation target for organizations running affected PrinterLogic deployments.

Root Cause

The root cause stems from improper handling of authentication cookie data within the application's response generation logic. Instead of strictly managing cookies through secure HTTP headers with HttpOnly, Secure, and SameSite attributes, the application inadvertently includes cookie values within the response body content.

This design flaw likely originates from debugging code left in production, improper serialization of session objects, or misconfigured response handlers that echo back request data including sensitive cookie information.

Attack Vector

The attack vector for this vulnerability is network-based. An attacker positioned to intercept HTTP traffic (through man-in-the-middle attacks, network sniffing, or cross-site scripting) can extract authentication cookies from response bodies.

The attack scenario involves:

1. An attacker monitors network traffic or injects malicious JavaScript into pages
2. The vulnerable Vasion Print application returns cookie data within response bodies
3. The attacker captures the exposed cookie values
4. Using the stolen session cookies, the attacker can impersonate legitimate users and gain unauthorized access to the print management system

Since the vulnerability requires no authentication and has no user interaction requirements, exploitation is straightforward for attackers with network access to the affected system.

Detection Methods for CVE-2025-27673

Indicators of Compromise

• Unusual session activity from IP addresses not associated with legitimate users
• Multiple concurrent sessions for single user accounts indicating session cloning
• HTTP response logs showing cookie data appearing in response body content
• Unexpected access patterns to sensitive print management functions

Detection Strategies

• Implement deep packet inspection to identify HTTP responses containing cookie patterns in body content
• Deploy web application firewalls (WAF) with rules to detect cookie data in response payloads
• Enable verbose logging on Vasion Print appliances to capture response content for analysis
• Use SentinelOne Singularity to monitor for anomalous authentication patterns and session duplication

Monitoring Recommendations

• Configure network monitoring to alert on response bodies containing Set-Cookie patterns or session token formats
• Establish baseline authentication patterns and alert on deviations
• Monitor for session ID reuse from different source IP addresses
• Review print management access logs for unauthorized administrative actions

How to Mitigate CVE-2025-27673

Immediate Actions Required

• Upgrade Vasion Print Virtual Appliance Host to version 22.0.843 or later
• Upgrade Vasion Print Application to version 20.0.1923 or later
• Implement network segmentation to limit exposure of print management infrastructure
• Review and rotate existing session credentials after patching
• Deploy SentinelOne Singularity agents on systems hosting Vasion Print for runtime protection

Patch Information

Vasion (formerly PrinterLogic) has released security updates addressing this vulnerability. Administrators should consult the PrinterLogic Security Bulletins for detailed patch information and upgrade instructions.

Organizations should prioritize upgrading to Virtual Appliance Host version 22.0.843 or later and Application version 20.0.1923 or later to remediate this vulnerability.

Workarounds

• Place Vasion Print appliances behind a reverse proxy that strips or sanitizes response body content
• Implement strict network access controls limiting which systems can communicate with the print management infrastructure
• Enable HTTPS exclusively and deploy network-level encryption to reduce interception risk
• Configure web application firewall rules to detect and block responses containing cookie data in bodies
• Monitor authentication logs closely until patches can be applied

# Configuration example - Network access restriction for Vasion Print
# Restrict access to print management interface to trusted administrative networks
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP