Overview
The vulnerability identified as CVE-2025-34194 has been discovered in Vasion Print (formerly PrinterLogic) Virtual Appliance Host and Application. This flaw allows an unprivileged local user to escalate their privileges by manipulating temporary files created by the software. The exploitation of this vulnerability could lead to a system compromise or data leakage, posing a significant threat to the security of affected systems.
Vulnerability Summary
CVE ID: CVE-2025-34194
Severity: High (CVSS: 7.8)
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Impact: System compromise, data leakage, and potential loss of confidentiality, integrity, and availability
Affected Products
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Product | Affected Versions
Vasion Print Virtual Appliance Host | Unconfirmed
Vasion Print Application (Windows client deployments) | Unconfirmed
How the Exploit Works
The vulnerability exists due to the insecure handling of temporary files by the PrinterInstallerClient components of Vasion Print. The software creates files with NT AUTHORITY\SYSTEM privileges in a directory under the control of the local user. An attacker can exploit this by placing symbolic links or influencing filenames in the directory, causing the service to follow the link and write to arbitrary filesystem locations as SYSTEM. This allows a local, unprivileged user to overwrite or create files as SYSTEM, leading to a privilege escalation.
Conceptual Example Code
The following is a conceptual example of how the vulnerability might be exploited:
# Create a symbolic link to a protected file
ln -s /protected/system_file /Users/%USER%/AppData/Local/Temp/temp_file
# Wait for the service to write to the temp file
# This will overwrite the protected file due to the symbolic linkThis conceptual code demonstrates how an attacker might create a symbolic link to a protected file and use this vulnerability to overwrite it, leading to a privilege escalation.
