CVE-2024-24468 is a Cross-Site Request Forgery (CSRF) vulnerability identified in flusity-CMS version 2.33. This vulnerability allows a remote attacker to execute arbitrary code by exploiting the add_customblock.php endpoint. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a malicious request unknowingly, leveraging the user's active session to perform unauthorized actions. In this case, the attacker can craft a request that, when executed by an authenticated administrator or user with sufficient privileges, results in arbitrary code execution on the server hosting the CMS. The vulnerability is characterized by a lack of proper anti-CSRF protections on the add_customblock.php script, which is likely responsible for adding custom content blocks to the CMS. The CVSS 3.1 base score of 8.8 (high severity) reflects the vulnerability's network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The impact is significant, affecting confidentiality, integrity, and availability (all rated high), indicating that successful exploitation can lead to full system compromise. Although no known exploits are currently reported in the wild, the vulnerability's nature and severity make it a critical concern for organizations using flusity-CMS. No vendor or product-specific details beyond the CMS name and version are provided, and no patches or mitigations have been linked yet, indicating that organizations must be vigilant and proactive in addressing this issue.

For European organizations using flusity-CMS version 2.33, this vulnerability poses a serious risk. Successful exploitation could allow attackers to execute arbitrary code remotely, potentially leading to full system compromise, data theft, defacement, or disruption of services. Given the CMS's role in managing website content, attackers could manipulate website data, inject malicious content, or use compromised servers as pivot points for further attacks within the network. The high confidentiality impact means sensitive data hosted or processed by the CMS could be exposed. The integrity impact suggests attackers could alter website content or backend data, undermining trust and compliance with data protection regulations such as GDPR. The availability impact indicates potential denial-of-service conditions or system outages, affecting business continuity. European organizations in sectors relying heavily on web presence and content management, such as government, education, media, and e-commerce, are particularly at risk. The lack of patches increases the urgency for interim mitigations to prevent exploitation. Additionally, the requirement for user interaction implies that social engineering or phishing could be used to trigger the exploit, increasing the attack surface.

1. Implement strict anti-CSRF protections: Organizations should immediately review and enhance CSRF defenses on all web forms and endpoints, especially add_customblock.php. This includes using synchronizer tokens or double-submit cookies to validate legitimate requests. 2. Restrict access to add_customblock.php: Limit access to this script to only trusted administrators and IP addresses via web application firewall (WAF) rules or network segmentation. 3. Monitor and log suspicious activity: Enable detailed logging for requests to add_customblock.php and monitor for unusual or unauthorized attempts to invoke this endpoint. 4. User awareness training: Educate administrators and users with CMS privileges about phishing and social engineering risks to reduce the likelihood of user interaction triggering the exploit. 5. Apply virtual patching: If no official patch is available, use WAF or intrusion prevention systems (IPS) to block known attack patterns targeting this vulnerability. 6. Segregate CMS environment: Isolate the CMS server from critical internal networks to limit lateral movement in case of compromise. 7. Regularly update and patch: Monitor vendor communications for official patches or updates and apply them promptly once available. 8. Conduct security assessments: Perform penetration testing and code reviews focusing on CSRF and input validation controls within the CMS.