CVE-2024-58283 is a remote code execution vulnerability identified in WBCE CMS version 1.6.2, specifically linked to the Elfinder file manager component integrated within the CMS. The vulnerability stems from CWE-434, which involves the unrestricted upload of files with dangerous types. In this case, authenticated attackers can exploit the file upload functionality in the Elfinder connector to upload malicious PHP files, such as web shells. Once uploaded, these files can be executed on the server, allowing attackers to run arbitrary system commands. The vulnerability does not require user interaction beyond authentication, and the attack vector is network-based with low complexity. The CVSS 4.0 score of 8.7 reflects high severity due to the potential for full system compromise, impacting confidentiality, integrity, and availability. No patches have been officially released yet, and no known exploits have been detected in the wild, but the risk remains significant given the nature of the vulnerability. The Elfinder file manager is a widely used web-based file management tool, and its integration in WBCE CMS makes this a critical concern for users of this CMS version. The vulnerability highlights the importance of validating and restricting file uploads to prevent execution of malicious code on web servers.

The impact of CVE-2024-58283 on European organizations using WBCE CMS 1.6.2 can be severe. Successful exploitation allows attackers to gain remote code execution capabilities, potentially leading to full system compromise. This can result in unauthorized access to sensitive data, defacement of websites, deployment of ransomware or other malware, and disruption of services. For organizations handling personal data under GDPR, such breaches could lead to significant regulatory penalties and reputational damage. The vulnerability threatens the confidentiality, integrity, and availability of affected systems. Given the ease of exploitation and the lack of required user interaction, attackers with valid credentials can quickly escalate their access. European entities relying on WBCE CMS for public-facing websites or internal portals are at risk of targeted attacks, especially in sectors like government, education, and small-to-medium enterprises where WBCE CMS might be more prevalent. The absence of known exploits in the wild provides a window for proactive mitigation, but the potential impact remains critical if left unaddressed.

To mitigate CVE-2024-58283, European organizations should immediately restrict or disable the Elfinder file manager upload functionality if possible. Implement strict file type validation to block uploads of executable files such as PHP, and enforce whitelist-based file extension policies. Ensure that authentication mechanisms are robust, including strong password policies and multi-factor authentication to reduce the risk of credential compromise. Monitor web server logs and file upload directories for suspicious activity, including unexpected PHP files or web shells. If patching is not yet available, consider isolating the WBCE CMS environment using network segmentation and web application firewalls (WAFs) configured to detect and block malicious payloads. Regularly audit and review user permissions to limit upload capabilities to trusted users only. Additionally, organizations should prepare incident response plans specific to web shell detection and removal. Finally, maintain up-to-date backups of website data and configurations to enable rapid recovery in case of compromise.