CVE-2009-2184 in Media Photo Host
Summary
by MITRE
Absolute path traversal vulnerability in forcedownload.php in Gravy Media Photo Host 1.0.8 allows remote attackers to read arbitrary files via an encoded "/" (slash) in the file parameter.
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Analysis
by VulDB Data Team • 12/01/2024
The CVE-2009-2184 vulnerability represents a critical absolute path traversal flaw in the Gravy Media Photo Host 1.0.8 web application. This vulnerability specifically affects the forcedownload.php script which handles file download operations within the photo hosting platform. The issue arises from insufficient input validation and sanitization of the file parameter, allowing malicious actors to manipulate the file path traversal mechanism. The vulnerability is particularly dangerous because it enables remote attackers to access arbitrary files on the server filesystem by exploiting encoded forward slash characters in the file parameter. This type of vulnerability falls under the CWE-22 category, which specifically addresses path traversal or directory traversal attacks that occur when applications fail to properly validate user-supplied input before using it to access files or directories.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious request containing an encoded slash character that bypasses normal path validation mechanisms. The forcedownload.php script processes the file parameter without adequate sanitization, allowing the encoded forward slash to be interpreted as a legitimate path separator. This enables attackers to traverse the filesystem beyond the intended download directory and access sensitive files such as configuration files, database credentials, system files, or other confidential data that should remain protected. The vulnerability demonstrates a classic lack of proper input validation and output encoding practices that are fundamental to secure web application development. From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1213.002 which covers data from local system, and T1566.001 which involves spearphishing attachments, as attackers can leverage such vulnerabilities to obtain sensitive information from compromised systems.
The operational impact of CVE-2009-2184 extends beyond simple file disclosure, as it can lead to complete system compromise when combined with other attack vectors. An attacker who successfully exploits this vulnerability can potentially access database configuration files containing administrative credentials, application source code that may reveal additional vulnerabilities, or system configuration files that could provide insights into the underlying infrastructure. The vulnerability affects the confidentiality and integrity aspects of the CIA triad, as unauthorized access to sensitive files violates both data confidentiality and system integrity. Organizations running Gravy Media Photo Host 1.0.8 are particularly at risk since this vulnerability allows for arbitrary file reading without authentication, making it a prime target for automated exploitation tools. The impact is especially severe in environments where the web application is hosted on servers with access to sensitive system resources or where the application runs with elevated privileges.
Mitigation strategies for CVE-2009-2184 must address the root cause through proper input validation and sanitization mechanisms. The most effective approach involves implementing strict input validation that rejects any input containing path traversal sequences or encoded special characters. Organizations should employ a whitelist-based approach to file access, where only predetermined and safe file paths are permitted for download operations. The application should normalize all file paths and remove any potentially dangerous characters or sequences before processing. Additionally, implementing proper access controls and privilege separation ensures that the web application does not run with unnecessary elevated privileges. Security headers and proper error handling should be implemented to prevent information leakage. From a defensive perspective, this vulnerability highlights the importance of input validation practices and aligns with ATT&CK technique T1078.004 which covers valid accounts, as the lack of proper validation can lead to unauthorized access to system resources. Regular security audits, code reviews focusing on input handling, and maintaining up-to-date security patches are essential preventive measures against similar vulnerabilities in web applications. The vulnerability also underscores the need for proper secure coding practices and adherence to security standards such as those defined in the OWASP Top Ten project, particularly focusing on input validation and secure file handling mechanisms.