CVE-2006-4276 in Tutti Nova
Summary
by MITRE
PHP remote file inclusion vulnerability in Tutti Nova 1.6 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the TNLIB_DIR parameter to novalib/class.novaEdit.mysql.php.
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Analysis
by VulDB Data Team • 07/14/2024
The vulnerability described in CVE-2006-4276 represents a critical remote file inclusion flaw affecting Tutti Nova version 1.6 and earlier. This vulnerability resides within the novalib/class.novaEdit.mysql.php file where the TNLIB_DIR parameter is improperly validated, creating an opportunity for attackers to inject malicious URLs that can execute arbitrary PHP code on the target server. The flaw demonstrates a classic path traversal and code execution vulnerability that has been documented in numerous security assessments and vulnerability databases.
This vulnerability operates under the weakness category of CWE-98, which specifically addresses "Improper Control of Generation of Code ('Code Injection')" and falls within the broader context of CWE-89, "Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')". The vulnerability enables attackers to leverage the remote file inclusion mechanism by manipulating the TNLIB_DIR parameter to point to external malicious PHP scripts hosted on remote servers. This allows for complete server compromise through the execution of arbitrary code, potentially leading to data theft, system infiltration, or further exploitation of the compromised environment.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with the capability to execute malicious code with the privileges of the web server process. This can result in complete system compromise, data exfiltration, and establishment of persistent backdoors. The vulnerability aligns with ATT&CK technique T1190 "Exploit Public-Facing Application" and T1059.007 "Command and Scripting Interpreter: PHP" within the MITRE ATT&CK framework, demonstrating how attackers can leverage web application flaws to achieve remote code execution. Organizations using affected versions of Tutti Nova face significant risk of unauthorized access and potential complete system takeover.
Mitigation strategies for this vulnerability should focus on immediate patching of the affected software to version 1.7 or later, which contains the necessary fixes for the remote file inclusion flaw. Additionally, implementing input validation and sanitization measures can prevent malicious URLs from being processed through the TNLIB_DIR parameter. Network-based mitigations such as web application firewalls can help detect and block attempts to exploit this vulnerability, while access controls and privilege separation can limit the damage if exploitation occurs. The vulnerability also underscores the importance of following secure coding practices including parameter validation, input sanitization, and the principle of least privilege in web application development.