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CVE-2025-34199: MitM Attacks Enabled by Insecure Defaults and Code Patterns in Vasion Print

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Overview

The cybersecurity landscape is awash with various threats, and one of the most recent and significant is CVE-2025-34199. This vulnerability affects Vasion Print Virtual Appliance Host and Application versions prior to 22.0.1049 and 20.0.2786 respectively. It exposes systems to potential man-in-the-middle (MitM) attacks due to insecure defaults and code patterns that disable TLS/SSL certificate verification for communications to printers and internal microservices. As a result, sensitive data, including print jobs, configuration, and authentication tokens, are at risk of interception, modification, or even disruption by an opportunistic attacker.

Vulnerability Summary

CVE ID: CVE-2025-34199
Severity: High, CVSS score 8.1
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Vasion Print Virtual Appliance Host | Prior to 22.0.1049
Vasion Print Application | Prior to 20.0.2786

How the Exploit Works

The vulnerability lies in the Vasion Print Virtual Appliance Host and Application’s use of libcurl/PHP transport options and environment variables. These are set to disable CURLOPT_SSL_VERIFYHOST and CURLOPT_SSL_VERIFYPEER, and turn off verification for gateway and microservice endpoints. This results in the client accepting TLS connections without validating server certificates, and in some cases, using clear-text HTTP. As a result, an attacker who can intercept network traffic between the product and printers or microservices can eavesdrop on and modify sensitive data, inject malicious payloads, or disrupt service.

Conceptual Example Code

While specific exploit code is beyond the scope of this article, the conceptual example below illustrates the potential for such an attack:

GET /printjob/12345 HTTP/1.1
Host: vulnerableprinter.example.com
//The attacker intercepts the request and modifies the print job data.
{ "print_data": "Malicious content injected here" }

In this conceptual example, an attacker intercepts the HTTP request for a print job and injects malicious content, thereby demonstrating the potential for abuse.

Mitigation and Solution

The most effective method of mitigating this vulnerability is by applying the patch provided by the vendor. If the patch cannot be immediately applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These tools can help detect and block potential exploit attempts. However, it is crucial to note that these are temporary measures and the official patch should be applied as soon as possible to fully secure your systems.
Continuously monitoring your systems for unusual activity and regularly updating all software components to their latest versions can also help in preventing such vulnerabilities. As always, maintaining a robust cybersecurity posture is the best defense against potential threats.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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