CVE-2024-29272 is a security vulnerability identified in VvvebJs, an open-source web page builder framework, affecting versions prior to 1.7.5. The flaw resides in the save.php script, specifically in the handling of the sanitizeFileName parameter, which is used during file upload operations. Due to insufficient validation or sanitization of this parameter, unauthenticated remote attackers can upload arbitrary files to the server. This arbitrary file upload can be leveraged to execute malicious code remotely, potentially allowing attackers to gain unauthorized access, execute commands, or retrieve sensitive information stored on the server. The vulnerability is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type). The CVSS 3.1 base score is 6.5, reflecting a medium severity level, with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and impacts on confidentiality and integrity but not availability. No public exploits have been reported yet, but the vulnerability poses a significant risk due to the lack of authentication and ease of exploitation. The absence of a patch link suggests that users should upgrade to VvvebJs version 1.7.5 or later where the issue is resolved.

The impact of CVE-2024-29272 on organizations can be substantial, especially for those deploying VvvebJs in production environments for web development or content management. Successful exploitation allows attackers to upload malicious files, which can lead to arbitrary code execution on the server. This compromises the confidentiality of sensitive data and the integrity of the application and underlying system. Attackers could use this foothold to move laterally within the network, escalate privileges, or exfiltrate data. Although availability is not directly affected, the breach could lead to further attacks that disrupt services. Organizations with public-facing web applications using vulnerable VvvebJs versions are at higher risk, potentially exposing customer data and internal resources. The lack of authentication requirement increases the threat surface, making automated attacks feasible. The absence of known exploits in the wild currently limits immediate widespread impact, but the vulnerability remains a significant risk if weaponized.

To mitigate CVE-2024-29272, organizations should immediately upgrade VvvebJs to version 1.7.5 or later, where the vulnerability is patched. In addition, implement strict server-side validation and sanitization of all file upload parameters, especially sanitizeFileName, to prevent malicious file uploads. Employ allowlisting of acceptable file types and enforce file size limits. Use web application firewalls (WAFs) to detect and block suspicious upload attempts. Restrict file upload directories with proper permissions to prevent execution of uploaded files. Monitor logs for unusual file upload activity and conduct regular security assessments of web applications using VvvebJs. Isolate web servers from critical internal networks to limit lateral movement in case of compromise. Finally, maintain up-to-date backups and incident response plans to quickly recover from potential breaches.