CVE-2008-3675 in Gelatocms
Summary
by MITRE
Directory traversal vulnerability in classes/imgsize.php in Gelato 0.95 allows remote attackers to read arbitrary files via (1) a .. (dot dot) and possibly (2) a full pathname in the img parameter. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 11/03/2024
The vulnerability identified as CVE-2008-3675 represents a critical directory traversal flaw in the Gelato 0.95 content management system, specifically within the classes/imgsize.php component. This weakness enables remote attackers to access arbitrary files on the server by manipulating the img parameter through directory traversal sequences. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file access paths, allowing malicious users to navigate beyond the intended directory structure and retrieve sensitive information from the file system.
The technical implementation of this vulnerability occurs when the application processes image size calculations without properly validating or sanitizing the img parameter. Attackers can exploit this by submitting crafted paths containing .. sequences or full pathnames that bypass normal access controls. This allows unauthorized access to files that should remain protected, including configuration files, database credentials, application source code, and other sensitive data. The flaw operates at the application level, making it particularly dangerous as it can be exploited remotely without requiring authentication or prior access to the system.
From an operational impact perspective, this vulnerability poses significant risks to organizations using Gelato 0.95 systems. Successful exploitation could lead to complete system compromise, data theft, and potential lateral movement within network environments. The vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. These attacks are classified under the ATT&CK framework as T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachments), demonstrating how such vulnerabilities can be leveraged for broader reconnaissance and exploitation activities.
The security implications extend beyond immediate data exposure, as attackers may use this vulnerability to establish persistent access or deploy additional malware. Organizations should implement immediate mitigations including input validation, path normalization, and proper access controls. The vulnerability highlights the critical importance of validating all user-supplied input and implementing robust security measures in web applications. Given the age of the affected software version, organizations should prioritize upgrading to supported versions or implementing compensating controls to prevent exploitation attempts. This vulnerability serves as a reminder of the ongoing need for thorough security testing and proper input validation practices in web application development.