CVE-2006-6328 in TorrentFlux
Summary
by MITRE
Directory traversal vulnerability in index.php for TorrentFlux 2.2 allows remote attackers to create or overwrite arbitrary files via sequences in the alias_file parameter.
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Analysis
by VulDB Data Team • 08/08/2024
The vulnerability identified as CVE-2006-6328 represents a critical directory traversal flaw within the TorrentFlux 2.2 web application, specifically affecting the index.php script. This weakness enables remote attackers to manipulate file system operations by exploiting improper input validation mechanisms. The vulnerability manifests through the alias_file parameter, which when manipulated with specific sequences can bypass intended security restrictions and allow unauthorized file system interactions.
This directory traversal vulnerability falls under the category of CWE-22 - Improper Limitation of a Pathname to a Restricted Directory, and aligns with ATT&CK technique T1059.007 - Command and Scripting Interpreter: PowerShell. The flaw stems from inadequate sanitization of user-supplied input, particularly the alias_file parameter, which does not properly validate or filter special characters that could be used to navigate the file system hierarchy. Attackers can exploit this by crafting malicious input containing sequences such as "../" or similar path traversal patterns that would normally be restricted.
The operational impact of this vulnerability is severe as it provides attackers with the capability to create or overwrite arbitrary files on the target system. This could potentially lead to remote code execution, data corruption, or complete system compromise depending on the privileges of the web application. The vulnerability affects the integrity and confidentiality of the system since unauthorized file modifications could result in the deployment of malicious code, the deletion of critical files, or the manipulation of application data. The remote nature of the attack means that exploitation does not require physical access to the system, making it particularly dangerous for web applications.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization mechanisms. The primary defense involves ensuring that all user-supplied input is thoroughly validated and sanitized before processing, particularly parameters that could influence file system operations. Implementing a whitelist approach for acceptable file names and paths, combined with proper path normalization and absolute path resolution, would significantly reduce the risk. Additionally, the web application should operate with minimal required privileges and implement proper access controls to limit the impact of potential exploitation. The system should also employ proper error handling that does not reveal sensitive information about the file system structure, and regular security audits should be conducted to identify similar vulnerabilities in other components of the application.