CVE-2003-0482 in TUTOS
Summary
by MITRE
TUTOS 1.1 allows remote attackers to execute arbitrary code by uploading the code using file_new.php, then directly accessing the uploaded code via a request to the repository containing the code.
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Analysis
by VulDB Data Team • 08/13/2025
The vulnerability identified as CVE-2003-0482 affects TUTOS version 1.1, a web-based collaborative platform that provides calendar, address book, and task management functionalities. This security flaw represents a critical path for remote code execution that stems from inadequate input validation and file handling mechanisms within the application's upload functionality. The vulnerability specifically resides in the file_new.php component which processes file uploads without proper sanitization or access controls, creating an avenue for malicious actors to compromise the system through carefully crafted file uploads.
The technical implementation of this vulnerability exploits the absence of proper file type validation and access restriction mechanisms. When users upload files through the file_new.php script, the system fails to verify the file extensions, content types, or execute proper sanitization procedures. This allows attackers to upload malicious code disguised as legitimate files, typically leveraging common web shell extensions or executable formats that can be executed within the web server environment. The vulnerability manifests when the uploaded files are stored in the repository directory and subsequently accessible via direct HTTP requests to the repository paths, enabling attackers to execute the malicious code remotely without requiring authentication or additional exploitation steps.
The operational impact of this vulnerability is severe and encompasses multiple attack vectors that can lead to complete system compromise. An attacker can leverage this flaw to establish persistent access to the target system, potentially leading to data exfiltration, privilege escalation, or deployment of additional malware. The vulnerability directly maps to CWE-434 which describes insecure file upload vulnerabilities where applications accept files from untrusted sources without proper validation. This weakness enables attackers to execute arbitrary code with the privileges of the web server process, potentially allowing them to access sensitive data, modify system configurations, or use the compromised system as a launch point for further attacks within the network infrastructure.
The attack pattern follows established methodologies described in the MITRE ATT&CK framework under the technique of "Command and Scripting Interpreter" where adversaries use legitimate system utilities or web shells to execute malicious code. The vulnerability also aligns with ATT&CK's "T1190 - Exploit Public-Facing Application" category, as it represents an exploitable weakness in a publicly accessible web application. Organizations using TUTOS 1.1 are particularly vulnerable since this flaw allows for direct code execution without requiring additional reconnaissance or privilege escalation techniques. The impact extends beyond immediate system compromise to potential data breaches, service disruption, and compliance violations, especially in environments where the application handles sensitive personal or organizational information.
Mitigation strategies for this vulnerability should focus on implementing comprehensive file upload restrictions and access controls. Organizations must enforce strict file type validation by checking both file extensions and MIME types against a whitelist of approved formats. The system should implement proper file naming conventions and store uploaded files outside the web root directory to prevent direct execution. Additional protections include implementing proper access controls that restrict file access to authorized users only, conducting regular security audits of file handling components, and applying the latest security patches from the vendor. Network-level controls such as web application firewalls and intrusion detection systems can provide additional layers of protection against exploitation attempts, while regular security monitoring helps detect unauthorized file uploads and execution attempts.