CVE-2006-6599 in torrentflux-b4rt
Summary
by MITRE
maketorrent.php in TorrentFlux 2.2 allows remote authenticated users to execute arbitrary commands via shell metacharacters (";" semicolon) in the announce parameter.
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Analysis
by VulDB Data Team • 12/21/2024
The vulnerability identified as CVE-2006-6599 affects TorrentFlux 2.2's maketorrent.php script, representing a critical command injection flaw that enables authenticated remote attackers to execute arbitrary system commands. This vulnerability arises from insufficient input validation and sanitization within the announce parameter processing logic, creating a direct pathway for malicious command execution on the affected system. The flaw specifically manifests when users with valid credentials submit crafted announce URLs containing semicolon characters that are not properly escaped or filtered, allowing attackers to append additional commands to the system execution chain.
This vulnerability falls under the CWE-77 category of Command Injection, which is classified as a severe security weakness in software applications that execute system commands based on user input without proper sanitization. The ATT&CK framework categorizes this as a Command and Scripting Interpreter technique, specifically leveraging the execution of system commands through web applications. The vulnerability demonstrates how improper input handling can lead to complete system compromise, as authenticated users can leverage this flaw to execute arbitrary commands with the privileges of the web application process.
The operational impact of this vulnerability extends beyond simple command execution, as it provides attackers with the capability to manipulate the entire TorrentFlux application environment. An attacker could potentially access sensitive system files, modify application configurations, install backdoors, or even escalate privileges to gain root access depending on the system's security posture. The authenticated nature of the vulnerability means that attackers need valid user credentials, but this requirement does not significantly mitigate the risk since account compromise is a common attack vector in web application environments.
Mitigation strategies for this vulnerability should include immediate input validation and sanitization of all user-supplied parameters, particularly those used in system command execution contexts. The implementation of proper parameter escaping, input filtering, and output encoding techniques should be enforced throughout the application. Additionally, privilege separation and the principle of least privilege should be applied to limit the system capabilities available to the web application process. Security patches should be applied immediately, and the application should be configured to use secure coding practices that prevent command injection vulnerabilities. Network segmentation and monitoring should also be implemented to detect and prevent exploitation attempts.