CVE-2025-27667 in Virtual Appliance Host
Summary
by MITRE • 03/05/2025
Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Administrative User Email Enumeration OVE-20230524-0011.
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Analysis
by VulDB Data Team • 06/02/2025
The vulnerability identified as CVE-2025-27667 affects Vasion Print Virtual Appliance Host versions prior to 22.0.843 and Application versions prior to 20.0.1923. This security flaw represents a critical email enumeration vulnerability that enables authenticated administrative users to systematically discover valid email addresses within the system. The vulnerability stems from insufficient input validation and output sanitization mechanisms within the authentication and user management components of the software. Attackers can exploit this weakness by sending crafted requests to the application's email validation endpoints, which then return distinct responses indicating whether an email address exists in the system database.
The technical implementation of this vulnerability falls under CWE-200, which describes exposure of sensitive information to an unauthorized actor. The flaw operates by leveraging the administrative user privileges to query the system's user directory through predictable response patterns. When valid email addresses are submitted to the authentication endpoint, the system responds with different error messages or status codes compared to invalid email submissions, creating a timing or response-based enumeration mechanism. This type of vulnerability is particularly dangerous because it allows attackers to build comprehensive user directories that can be used for subsequent attacks such as credential stuffing, targeted phishing campaigns, or social engineering operations.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with a foundation for more sophisticated attacks within the targeted environment. The enumeration capability enables threat actors to identify legitimate administrative accounts, understand user distribution patterns, and potentially map out organizational structures. According to ATT&CK framework category T1087, this vulnerability directly supports credential access and discovery techniques, while also aligning with T1566 for social engineering preparation. Organizations running affected versions of Vasion Print may experience unauthorized reconnaissance activities that could lead to full system compromise, especially when combined with other vulnerabilities or attack vectors.
Mitigation strategies for this vulnerability require immediate patching of affected systems to version 22.0.843 for the Virtual Appliance Host and 20.0.1923 for the Application. Organizations should also implement rate limiting and request throttling mechanisms to prevent automated enumeration attempts. The system should be configured to return consistent error messages regardless of whether an email address exists, eliminating the distinguishable responses that enable enumeration. Network-level controls including firewall rules and intrusion detection systems can be configured to monitor for suspicious patterns of email enumeration requests. Additionally, administrators should review and tighten access controls for administrative accounts, implement multi-factor authentication, and conduct regular security audits to identify similar vulnerabilities in other components of the system. The remediation process should include thorough testing to ensure that the patch does not disrupt legitimate administrative functions while effectively closing the enumeration gap.