CVE-2008-0357 in Mini File Host
Summary
by MITRE
Directory traversal vulnerability in pages/upload.php in Galaxyscripts Mini File Host 1.2.1 and earlier allows remote attackers to include and execute arbitrary local files via directory traversal sequences in the language parameter.
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Analysis
by VulDB Data Team • 10/14/2024
The vulnerability described in CVE-2008-0357 represents a critical directory traversal flaw within the Galaxyscripts Mini File Host version 1.2.1 and earlier systems. This security weakness resides in the pages/upload.php script which fails to properly validate input parameters, specifically the language parameter that controls localization settings. The flaw enables remote attackers to manipulate file inclusion mechanisms through carefully crafted directory traversal sequences such as ../ or ..\ which can bypass intended access controls and navigate to arbitrary locations within the server filesystem. This type of vulnerability falls under the Common Weakness Enumeration category CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The technical implementation of this vulnerability exploits the lack of proper input sanitization in the language parameter processing within the upload.php script. When an attacker submits a malicious value containing directory traversal sequences, the application fails to validate or sanitize this input before using it in file inclusion operations. This allows the attacker to specify paths that point outside the intended directory structure, potentially accessing sensitive system files, configuration data, or even executing arbitrary code if the application permits code execution in included files. The vulnerability is particularly dangerous because it operates at the file system level, enabling attackers to bypass traditional web application security controls and directly access server resources that should remain protected.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can potentially enable full system compromise when combined with other attack vectors. Remote attackers can leverage this weakness to access administrative files, database configuration details, user credentials stored in configuration files, or even system binaries that could facilitate privilege escalation attacks. According to the MITRE ATT&CK framework, this vulnerability maps to techniques involving path traversal and privilege escalation, where attackers can move laterally within the system once they gain access to the file system through the initial traversal exploit. The vulnerability affects not just data confidentiality but also integrity and availability, as attackers could potentially modify critical system files or upload malicious content that gets executed by the web application.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization mechanisms throughout the application code. The most effective approach involves implementing strict parameter validation that rejects any input containing directory traversal sequences or other malicious path components. Developers should employ absolute path resolution techniques and maintain a whitelist of allowed language parameters rather than accepting user input directly. Additionally, implementing proper file access controls through secure coding practices such as using secure file inclusion functions and ensuring that the application runs with minimal necessary privileges can significantly reduce the impact of such vulnerabilities. Organizations should also consider implementing web application firewalls that can detect and block suspicious path traversal patterns, though the most reliable protection comes from fixing the underlying code implementation to prevent the vulnerability from existing in the first place.