CVE-2025-27655: Vasion Print SSRF Vulnerability

CVE-2025-27655 Overview

CVE-2025-27655 is a Server-Side Request Forgery (SSRF) vulnerability affecting Vasion Print (formerly PrinterLogic) Virtual Appliance Host and Application components. This vulnerability allows remote attackers to manipulate the server into making unauthorized requests to internal or external resources, potentially exposing sensitive data, accessing internal services, or facilitating further attacks on the infrastructure.

The vulnerability exists in the CPA v1 component (tracked as V-2023-009) and affects systems running versions prior to Virtual Appliance Host 22.0.862 and Application 20.0.2014.

Critical Impact

This SSRF vulnerability enables unauthenticated attackers to leverage the Vasion Print server as a proxy for internal network reconnaissance, accessing internal services, cloud metadata endpoints, and potentially exfiltrating sensitive configuration data or credentials.

Affected Products

• Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 22.0.862
• Vasion Print Application versions prior to 20.0.2014
• PrinterLogic Virtual Appliance (legacy naming)

Discovery Timeline

• 2025-03-05 - CVE-2025-27655 published to NVD
• 2025-11-03 - Last updated in NVD database

Technical Details for CVE-2025-27655

Vulnerability Analysis

This Server-Side Request Forgery vulnerability in Vasion Print allows attackers to craft malicious requests that cause the server to initiate connections to arbitrary destinations. SSRF vulnerabilities are particularly dangerous in enterprise print management solutions like Vasion Print because these systems often have privileged network positions with access to internal resources.

The vulnerability is classified under CWE-918 (Server-Side Request Forgery), which occurs when an application fetches remote resources based on user-supplied input without properly validating the destination URL. In this case, the CPA v1 component fails to adequately restrict the targets of outbound requests.

Successful exploitation requires no authentication and can be performed remotely over the network. The potential impact includes unauthorized access to internal services, cloud metadata endpoint access (potentially exposing cloud credentials), port scanning of internal networks, and data exfiltration through the vulnerable server.

Root Cause

The root cause of CVE-2025-27655 lies in insufficient input validation within the CPA v1 component of Vasion Print. The application accepts user-controlled URLs or parameters that influence server-side HTTP requests without implementing proper allowlist validation, URL scheme restrictions, or destination address filtering.

This allows attackers to specify internal IP addresses, localhost references, cloud metadata endpoints (such as 169.254.169.254), or other sensitive destinations that should not be accessible from external requests.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by sending specially crafted HTTP requests to the vulnerable Vasion Print server.

The exploitation flow typically involves:

1. Attacker identifies a Vasion Print instance exposed to the network
2. Attacker crafts a malicious request targeting the vulnerable CPA v1 endpoint
3. The server processes the request and initiates a connection to the attacker-specified destination
4. The server returns the response to the attacker, potentially disclosing internal data

The vulnerability can be leveraged to access internal services that would otherwise be unreachable, enumerate internal network resources, retrieve cloud metadata credentials, or bypass network security controls. For detailed technical analysis, refer to the Pierre Kim security research blog documenting this and related PrinterLogic vulnerabilities.

Detection Methods for CVE-2025-27655

Indicators of Compromise

• Unusual outbound connections from Vasion Print servers to internal IP ranges (e.g., 10.x.x.x, 172.16.x.x, 192.168.x.x)
• HTTP requests targeting cloud metadata endpoints such as 169.254.169.254 originating from the print server
• Access logs showing requests with internal URLs or IP addresses as parameters to the CPA v1 endpoint
• Unexpected DNS queries from the Vasion Print server for internal hostnames

Detection Strategies

• Deploy network monitoring to detect anomalous outbound traffic patterns from Vasion Print infrastructure
• Configure web application firewall (WAF) rules to inspect and block requests containing internal IP addresses or localhost references in URL parameters
• Monitor application logs for requests to the CPA v1 component with suspicious URL parameters
• Implement intrusion detection system (IDS) signatures for SSRF attack patterns targeting PrinterLogic/Vasion Print

Monitoring Recommendations

• Enable verbose logging on Vasion Print servers and centralize logs for SIEM analysis
• Set up alerts for outbound connections from print servers to sensitive internal services or cloud metadata endpoints
• Monitor for reconnaissance patterns such as sequential port scanning activity originating from the print server
• Review network flow data for unusual traffic volumes or destinations from Vasion Print infrastructure

How to Mitigate CVE-2025-27655

Immediate Actions Required

• Upgrade Vasion Print Virtual Appliance Host to version 22.0.862 or later immediately
• Upgrade Vasion Print Application to version 20.0.2014 or later
• Restrict network access to Vasion Print management interfaces using firewall rules
• Implement network segmentation to limit the print server's access to sensitive internal resources
• Review access logs for evidence of exploitation attempts

Patch Information

Vasion (formerly PrinterLogic) has released patched versions that address this SSRF vulnerability. Organizations should update to Virtual Appliance Host version 22.0.862 or later and Application version 20.0.2014 or later. Detailed patch information and security bulletins are available from the PrinterLogic Security Bulletins page.

Workarounds

• Implement egress filtering on the Vasion Print server to restrict outbound connections to only necessary destinations
• Deploy a reverse proxy or WAF in front of Vasion Print to filter requests containing internal IP addresses or suspicious URL patterns
• Isolate Vasion Print servers in a dedicated network segment with strict access controls
• Block access to cloud metadata endpoints (169.254.169.254) from the print server network segment