CVE-2025-27682: Vasion Print Information Disclosure Flaw

CVE-2025-27682 Overview

CVE-2025-27682 is a critical insecure permissions vulnerability affecting Vasion Print (formerly PrinterLogic) Virtual Appliance Host and Application. The vulnerability, tracked as V-2022-005, allows attackers to exploit improper access controls on log files, potentially leading to unauthorized access to sensitive information or system compromise. This insecure log permissions flaw enables attackers to read, modify, or manipulate log files that should be protected, creating pathways for privilege escalation or information disclosure.

Critical Impact

This vulnerability allows unauthorized network-based attackers to exploit insecure log permissions without requiring authentication or user interaction, potentially exposing sensitive system information and enabling further compromise of affected PrinterLogic deployments.

Affected Products

• Vasion Print (formerly PrinterLogic) Virtual Appliance Host before version 1.0.735
• Vasion Print Application before version 20.0.1330
• PrinterLogic Virtual Appliance deployments running unpatched versions

Discovery Timeline

• 2025-03-05 - CVE-2025-27682 published to NVD
• 2025-11-03 - Last updated in NVD database

Technical Details for CVE-2025-27682

Vulnerability Analysis

This vulnerability is classified under CWE-276 (Incorrect Default Permissions), which occurs when software installs files or directories with insecure permissions that could allow unintended actors to access or modify protected resources. In the context of Vasion Print (PrinterLogic), log files are created or stored with permissions that are too permissive, allowing unauthorized users to read sensitive data contained within these logs.

Log files in enterprise print management solutions often contain sensitive information including authentication tokens, user credentials, system paths, configuration details, and debugging information that could be leveraged by attackers to escalate privileges or pivot within the network. The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring any form of authentication or user interaction.

Root Cause

The root cause of CVE-2025-27682 lies in the incorrect default permissions assigned to log files within the Vasion Print (PrinterLogic) application. When log files are created, they are assigned overly permissive access controls (such as world-readable permissions), allowing any user or process on the system—or potentially network-accessible entities—to read their contents. This design flaw violates the principle of least privilege and exposes sensitive operational data to unauthorized parties.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no privileges or user interaction. An attacker can remotely access insecure log files through the Virtual Appliance interface. The exploitation flow typically involves:

1. Identifying a vulnerable Vasion Print/PrinterLogic deployment accessible over the network
2. Locating log file storage locations through enumeration or default path knowledge
3. Accessing log files due to insecure permissions
4. Extracting sensitive information such as credentials, tokens, or system configuration details
5. Using harvested information for privilege escalation or lateral movement within the target environment

For detailed technical analysis of this vulnerability and related issues in Vasion Print, see the Pierre Kim Blog Analysis and the Full Disclosure Mailing List post.

Detection Methods for CVE-2025-27682

Indicators of Compromise

• Unusual access patterns to log file directories within PrinterLogic Virtual Appliance installations
• Evidence of log file enumeration or bulk log file access from unauthorized sources
• Network connections to the Virtual Appliance from unexpected IP addresses attempting to access log paths
• Signs of credential harvesting or authentication token theft following log file exposure

Detection Strategies

• Monitor file access events on PrinterLogic log directories for unauthorized read operations
• Implement network intrusion detection rules to identify reconnaissance activity targeting PrinterLogic deployments
• Review access logs for anomalous requests to log file storage locations
• Deploy endpoint detection solutions to monitor for suspicious file permission changes or log file access patterns

Monitoring Recommendations

• Enable verbose logging on network security appliances monitoring traffic to/from PrinterLogic Virtual Appliances
• Configure SIEM alerts for any external access attempts to log file paths
• Establish baseline access patterns for log directories and alert on deviations
• Monitor for post-exploitation indicators such as credential reuse or lateral movement following potential log exposure

How to Mitigate CVE-2025-27682

Immediate Actions Required

• Upgrade Vasion Print Virtual Appliance Host to version 1.0.735 or later immediately
• Upgrade Vasion Print Application to version 20.0.1330 or later
• Review and restrict file permissions on all log directories to authorized users and processes only
• Audit existing log files for sensitive information that may have been exposed
• Rotate any credentials or tokens that may have been logged and potentially compromised

Patch Information

Vasion (formerly PrinterLogic) has released patched versions that address this insecure log permissions vulnerability. Organizations should upgrade to Virtual Appliance Host version 1.0.735 or later and Application version 20.0.1330 or later. For detailed patch information and security updates, consult the PrinterLogic Security Bulletins.

Workarounds

• Manually restrict permissions on log directories to limit access to only necessary system accounts
• Implement network segmentation to isolate PrinterLogic Virtual Appliances from untrusted network segments
• Deploy web application firewalls (WAF) to filter and monitor requests to PrinterLogic deployments
• Consider disabling or relocating verbose logging until patches can be applied
• Implement file integrity monitoring on log directories to detect unauthorized access

# Example: Restrict log file permissions on Linux-based Virtual Appliance
# Identify PrinterLogic log directories and restrict permissions
chmod 640 /path/to/printerlogic/logs/*.log
chown root:printerlogic /path/to/printerlogic/logs/*.log
# Remove world-readable permissions from log directories
chmod 750 /path/to/printerlogic/logs/