CVE-2007-2091 in tsdisplay4xoops
Summary
by MITRE
PHP remote file inclusion vulnerability in blocks/tsdisplay4xoops_block2.php in tsdisplay4xoops (TSD4XOOPS, aka the TeamSpeak display module) 0.1 allows remote attackers to execute arbitrary PHP code via a URL in the xoops_url parameter.
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Analysis
by VulDB Data Team • 09/06/2024
The vulnerability identified as CVE-2007-2091 represents a critical remote file inclusion flaw in the tsdisplay4xoops module version 0.1, which is part of the TeamSpeak display module ecosystem for Xoops content management systems. This vulnerability resides within the blocks/tsdisplay4xoops_block2.php file and demonstrates a classic security weakness that has been documented in numerous web application frameworks over the years. The flaw specifically manifests when the application fails to properly validate or sanitize user-supplied input parameters, creating an avenue for malicious actors to inject arbitrary code execution payloads through the xoops_url parameter.
The technical exploitation of this vulnerability occurs through the manipulation of the xoops_url parameter which is processed within the tsdisplay4xoops_block2.php script. When an attacker crafts a malicious URL and passes it through this parameter, the application's insufficient input validation allows the remote file inclusion attack to proceed. This weakness falls under the category of CWE-88, which describes improper neutralization of special elements used in an input command, and more specifically aligns with CWE-94, which addresses the execution of arbitrary code or commands. The vulnerability operates at the application layer and demonstrates how inadequate parameter sanitization can lead to complete system compromise when combined with remote code execution capabilities.
The operational impact of this vulnerability extends far beyond simple data theft or service disruption. An attacker who successfully exploits this vulnerability can execute arbitrary PHP code on the target server with the privileges of the web application user. This capability enables a wide range of malicious activities including but not limited to data exfiltration, server compromise, backdoor installation, and further network reconnaissance. The vulnerability affects systems running Xoops CMS with the specific tsdisplay4xoops module installed, potentially exposing thousands of websites to remote code execution attacks. The attack vector is particularly dangerous because it requires minimal user interaction beyond the initial exploitation, making it suitable for automated attacks and mass exploitation campaigns.
From a threat modeling perspective, this vulnerability aligns with several ATT&CK techniques including T1059.007 for execution via scripting and T1190 for exploitation of remote services. The attack surface is significant as it affects the core functionality of the module and demonstrates how third-party components can introduce critical security flaws into otherwise secure systems. Organizations should consider implementing input validation measures, disabling remote file inclusion features, and applying immediate patches to address this vulnerability. The recommended mitigations include sanitizing all user inputs, implementing proper parameter validation, restricting file inclusion to local resources only, and deploying web application firewalls to detect and block malicious requests attempting to exploit this specific vulnerability. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar flaws in other modules and components within the Xoops ecosystem.