CVE-2022-3940 in ferry
Summary
by MITRE • 11/11/2022
A vulnerability, which was classified as problematic, was found in lanyulei ferry. This affects an unknown part of the file apis/process/task.go. The manipulation of the argument file_name leads to path traversal. The associated identifier of this vulnerability is VDB-213447.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/22/2026
The vulnerability identified as CVE-2022-3940 represents a critical path traversal flaw within the lanyulei ferry application, specifically impacting the apis/process/task.go file component. This security weakness allows malicious actors to manipulate the file_name argument through improper input validation, potentially enabling unauthorized access to arbitrary files on the system. The vulnerability's classification as problematic indicates significant risk to system integrity and data confidentiality, particularly in environments where the application processes user-supplied file names without adequate sanitization measures.
The technical implementation of this flaw resides in the insufficient validation of file_name parameters within the task.go file, which serves as a processing endpoint for file operations. When user input is directly incorporated into file path constructions without proper sanitization or canonicalization, attackers can exploit this weakness by crafting malicious input sequences that traverse directory structures beyond intended boundaries. This type of vulnerability falls under CWE-22 Path Traversal, which is categorized as a fundamental weakness in software security that allows attackers to access files and directories outside the intended scope of the application.
The operational impact of CVE-2022-3940 extends beyond simple unauthorized file access, potentially enabling attackers to read sensitive system files, configuration data, or even execute arbitrary code if the application has elevated privileges. The vulnerability could be exploited through various attack vectors including web application interfaces, API endpoints, or command-line interfaces that process file_name arguments. Given that this affects a core processing component, the attack surface may be substantial, particularly in applications that handle user-generated content or file operations as part of their primary functionality.
Mitigation strategies for this vulnerability should include immediate implementation of proper input validation and sanitization mechanisms that prevent directory traversal sequences from being processed. Organizations should enforce strict file path canonicalization, implement whitelisting approaches for acceptable file names, and ensure that all user-supplied input undergoes rigorous validation before being used in file system operations. The remediation process should align with ATT&CK technique T1059.007 Command and Scripting Interpreter: PowerShell, where appropriate defensive measures are implemented to prevent exploitation of similar weaknesses in application logic. Additionally, comprehensive code reviews should be conducted to identify and address similar patterns throughout the application codebase, particularly in areas handling file system operations and user input processing.