CVE-2022-4880 in OpenUtau
Summary
by MITRE • 01/09/2023
A vulnerability was found in stakira OpenUtau. It has been classified as critical. This affects the function VoicebankInstaller of the file OpenUtau.Core/Classic/VoicebankInstaller.cs of the component ZIP Archive Handler. The manipulation leads to path traversal. Upgrading to version 0.0.991 is able to address this issue. The name of the patch is 849a0a6912aac8b1c28cc32aa1132a3140caff4a. It is recommended to upgrade the affected component. The identifier VDB-217617 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 01/29/2023
The vulnerability identified as CVE-2022-4880 represents a critical path traversal flaw within the stakira OpenUtau application, specifically within the VoicebankInstaller component of the OpenUtau.Core.Classic namespace. This security weakness resides in the ZIP Archive Handler functionality located in the OpenUtau.Core/Classic/VoicebankInstaller.cs file, making it a significant concern for users who process voicebank files through this software. The vulnerability allows attackers to manipulate the application's behavior during ZIP archive processing, potentially enabling unauthorized file access and manipulation beyond the intended scope of the application's operation. The path traversal vulnerability specifically enables an attacker to navigate through the file system directories beyond the expected boundaries of the application's intended file handling operations, which can lead to arbitrary file reading, writing, or deletion.
The technical exploitation of this vulnerability occurs through the ZIP archive handling mechanism within the VoicebankInstaller function, where insufficient input validation and path sanitization allows maliciously crafted archive contents to bypass normal file system access controls. This flaw falls under CWE-22, which specifically addresses Path Traversal vulnerabilities, and represents a direct threat to the application's file system security boundaries. The vulnerability's classification as critical indicates that it can be easily exploited without requiring special privileges or complex attack vectors, making it particularly dangerous in environments where users might process untrusted voicebank files from external sources. Attackers can leverage this vulnerability to execute arbitrary code on the target system, potentially leading to complete system compromise or data exfiltration.
The operational impact of this vulnerability extends beyond simple file system access issues, as it can enable attackers to modify or delete critical application files, install malicious software, or access sensitive user data stored within the application's directory structure. Users who regularly process voicebank files from unknown or untrusted sources are particularly at risk, as the vulnerability can be exploited through normal application usage patterns. The vulnerability affects not only individual user systems but also broader deployment scenarios where multiple users might share the same OpenUtau installation or where automated processing systems handle voicebank files. Organizations using OpenUtau for voice synthesis projects, music production, or voice training applications face significant risk if they do not apply the recommended patch immediately.
The recommended mitigation strategy involves upgrading to version 0.0.991 of the OpenUtau application, which includes the patch identified by the commit hash 849a0a6912aac8b1c28cc32aa1132a3140caff4a. This upgrade addresses the underlying path traversal vulnerability by implementing proper input validation and path sanitization within the ZIP archive handling code. System administrators and users should prioritize applying this patch as soon as possible, particularly in environments where the application processes voicebank files from external sources or where multiple users might be affected. The vulnerability's assignment of identifier VDB-217617 indicates that it has been recognized by vulnerability databases and security researchers, emphasizing the importance of timely remediation. Organizations should also consider implementing additional security measures such as sandboxing the application, restricting file processing permissions, and monitoring for suspicious file access patterns as part of their overall security posture while awaiting the patch deployment.