CNVD-2019-13871 Scanner

The software being examined is aikcms, widely used for content management by websites looking to efficiently manage content and files. It is frequently deployed by developers and administrators because of its extensive customization options and user-friendly interface. The platform serves various industries, providing frameworks to develop and maintain functional websites and applications. However, due to its high user interactivity and file handling capabilities, it requires robust security practices. If not properly secured, it can be vulnerable to exploits, particularly concerning file upload mechanisms. Deployments of aikcms benefit from its continuous development, which ideally includes frequent security updates.

The identified vulnerability involves an Unrestricted File Upload flaw, allowing attackers to execute arbitrary code by uploading crafted files. Such vulnerabilities pose severe risks as they allow execution of malicious scripts, potentially leading to unauthorized access. Properly restricting file types, ensuring files were uploaded through validated methods and implementing security patches can mitigate these risks. If exploited, this vulnerability could be used to gain access and control system functionalities, compromising sensitive data and system integrity. Unrestricted file uploads remain a significant security concern in web-based applications without strong validation measures.

The technical details of this vulnerability lie in the improper validation and sanitization of file types during uploads. Attackers can bypass restrictions by uploading executable files, such as .php or .asp, that allow arbitrary code execution. The vulnerable endpoint is primarily the aikcms_v2.0.0_admin_page_system_poster_edit.php script. Careful crafting of HTTP POST requests can exploit this flaw by uploading malicious scripts to directories where they might be executed. The absence of an execution restriction on the server upload directory exacerbates the risk, potentially allowing full server control. Proactive security measures are necessary to safeguard against such exploits.

If exploited, malicious actors could upload shell scripts or other tools that execute commands on the server, leading to potential full compromise. This could result in data theft, adding backdoors, modifying or deleting files, and even taking the server offline. The consequences underscore the importance of timely updates and secure configurations to prevent unauthorized file manipulations and command executions. Business operations relying heavily on web presence might face reputational damage, operational disruption, or financial loss. Therefore, adhering to best security practices is crucial in environments utilizing aikcms.