CVE-2025-27650: Vasion Print Information Disclosure Flaw

CVE-2025-27650 Overview

CVE-2025-27650 is a critical credential security vulnerability affecting Vasion Print (formerly PrinterLogic) Virtual Appliance and Application software. The vulnerability allows exposure of private keys within the Docker overlay filesystem, potentially enabling attackers to compromise encrypted communications, forge digital signatures, or impersonate legitimate services within the print management infrastructure.

Critical Impact

Private cryptographic keys exposed in the Docker overlay can be leveraged by attackers to decrypt sensitive data, perform man-in-the-middle attacks, or gain unauthorized access to protected systems and communications.

Affected Products

• Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions before 22.0.862
• Vasion Print Application versions before 20.0.2014
• PrinterLogic Virtual Appliance deployments using Docker containerization

Discovery Timeline

• 2025-03-05 - CVE-2025-27650 published to NVD
• 2025-11-03 - Last updated in NVD database

Technical Details for CVE-2025-27650

Vulnerability Analysis

This vulnerability falls under CWE-522 (Insufficiently Protected Credentials), specifically relating to the improper storage and protection of private cryptographic keys within the Docker overlay filesystem. The affected PrinterLogic/Vasion Print deployment architecture inadvertently exposes sensitive private key material that should be protected with strict access controls or stored in secure key management systems.

Docker overlay filesystems, when not properly configured, can expose files across container layers in ways that make sensitive credentials accessible to unauthorized processes or users. In this case, private keys used for cryptographic operations are stored in locations within the overlay that can be accessed by attackers who gain initial access to the system.

The network-accessible nature of this vulnerability means that remote attackers who can reach the affected appliance may be able to extract these keys without requiring prior authentication, depending on the deployment configuration and network segmentation.

Root Cause

The root cause of CVE-2025-27650 is the improper handling and storage of private cryptographic keys within the Docker containerized environment. Private keys are stored in the Docker overlay filesystem without adequate protection mechanisms, making them accessible to unauthorized parties. This represents a fundamental secure development lifecycle failure where sensitive cryptographic material was not properly isolated or protected according to security best practices.

Attack Vector

The vulnerability is exploitable over the network without requiring user interaction or prior privileges. An attacker targeting this vulnerability would:

1. Identify an exposed Vasion Print/PrinterLogic virtual appliance on the network
2. Access the Docker overlay filesystem through various means (container escape, misconfigured permissions, or direct filesystem access)
3. Locate and extract the exposed private key files from the overlay layers
4. Use the compromised keys to decrypt communications, forge signatures, or impersonate legitimate services

The private keys, once obtained, can be used for various malicious purposes including decrypting TLS communications, signing malicious payloads to appear legitimate, or establishing unauthorized access to systems that trust certificates signed by these keys.

Detection Methods for CVE-2025-27650

Indicators of Compromise

• Unexpected access to Docker overlay directories containing private key material
• Anomalous file read operations targeting .pem, .key, or certificate-related files within container filesystems
• Unauthorized processes attempting to access cryptographic key storage locations
• Network traffic patterns indicating exfiltration of key material or use of compromised certificates

Detection Strategies

• Monitor Docker container filesystem access patterns for unusual reads of sensitive directories
• Implement file integrity monitoring (FIM) on directories containing cryptographic keys
• Deploy endpoint detection and response (EDR) solutions to detect credential access attempts
• Review container security configurations for proper secret management practices

Monitoring Recommendations

• Enable audit logging for all access to Docker overlay filesystems
• Configure alerts for any access to private key files outside of normal application operations
• Monitor for certificate-related anomalies such as unexpected certificate usage or signing operations
• Implement network traffic analysis to detect potential use of compromised cryptographic material

How to Mitigate CVE-2025-27650

Immediate Actions Required

• Upgrade Vasion Print Virtual Appliance Host to version 22.0.862 or later immediately
• Update Vasion Print Application to version 20.0.2014 or later
• Rotate all cryptographic keys that may have been exposed in affected deployments
• Review and revoke any certificates that were signed using potentially compromised keys
• Audit network access to affected appliances and restrict where possible

Patch Information

Vasion (formerly PrinterLogic) has addressed this vulnerability in Virtual Appliance Host version 22.0.862 and Application version 20.0.2014. Organizations should apply these updates immediately to remediate the private key exposure vulnerability. Detailed patch information and security bulletins are available through the PrinterLogic Security Bulletins page.

Additional technical details about this vulnerability and related issues can be found in the Pierre Kim security research blog and the Full Disclosure mailing list.

Workarounds

• Isolate affected PrinterLogic/Vasion Print appliances on restricted network segments until patching is possible
• Implement strict network access controls to limit exposure of the virtual appliance management interfaces
• Use Docker secret management features to properly protect sensitive credentials rather than storing them in overlay filesystems
• Deploy certificate transparency monitoring to detect unauthorized use of potentially compromised certificates
• Consider deploying a Web Application Firewall (WAF) to add an additional layer of protection for exposed services