CVE-2025-27658 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 Authentication Bypass OVE-20230524-0001.
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Analysis
by VulDB Data Team • 06/02/2025
The vulnerability identified as CVE-2025-27658 affects Vasion Print Virtual Appliance Host versions prior to 22.0.843 and Application versions prior to 20.0.1923, representing a critical authentication bypass flaw that fundamentally undermines the security posture of the affected system. This vulnerability falls under the category of authentication bypass, which is classified as CWE-287 within the Common Weakness Enumeration framework, indicating improper handling of authentication mechanisms that allows unauthorized access to protected resources. The flaw specifically relates to the application's authentication system where an attacker can bypass the standard authentication process without providing valid credentials, effectively granting full access to the system's administrative and operational functions.
The technical implementation of this vulnerability stems from inadequate validation of authentication tokens or session management within the Virtual Appliance Host environment. Attackers exploiting this flaw can manipulate the authentication flow by leveraging weaknesses in the token validation process or by exploiting a missing security check that should occur during the authentication handshake. This allows unauthorized individuals to access sensitive administrative interfaces, modify system configurations, and potentially gain control over connected printing infrastructure. The vulnerability represents a significant operational risk as it enables attackers to bypass the standard security controls that protect against unauthorized access to critical system functions.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it can lead to complete system compromise and potential data breaches within enterprise printing environments. Organizations utilizing Vasion Print appliances may face unauthorized modification of print queues, configuration changes that could disrupt printing services, and potential lateral movement within the network through compromised printing infrastructure. The attack vector typically involves manipulation of authentication requests or exploitation of a logic flaw in how the system validates user credentials, allowing attackers to assume legitimate user identities without proper authentication. This vulnerability directly impacts the principle of least privilege and can enable privilege escalation attacks, making it particularly dangerous in enterprise environments where printing systems often serve as gateways to network resources.
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, as provided by the vendor. Organizations should implement network segmentation to limit access to printing infrastructure and establish robust monitoring for unusual authentication patterns or unauthorized access attempts. Security controls should include enforcement of multi-factor authentication for administrative access, regular security audits of print server configurations, and implementation of network access controls that restrict direct access to critical system interfaces. Additionally, organizations should conduct comprehensive vulnerability assessments to identify any other systems that may be vulnerable to similar authentication bypass flaws and establish incident response procedures specifically addressing unauthorized access to printing infrastructure. The ATT&CK framework categorizes this type of vulnerability under T1078 Valid Accounts and T1566 Phishing, as attackers may leverage this flaw to establish persistent access to network resources through compromised print server systems.