CVE-2025-5322 in VikRentCar Car Rental Management System Plugin
Summary
by MITRE • 07/04/2025
The VikRentCar Car Rental Management System plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the do_updatecar and createcar functions in all versions up to, and including, 1.4.3. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload arbitrary files on the affected site's server, which may make remote code execution possible.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/04/2025
The VikRentCar Car Rental Management System plugin for WordPress presents a critical security vulnerability that stems from inadequate input validation mechanisms within its file upload functionality. This vulnerability exists in versions up to and including 1.4.3, where the plugin fails to properly validate file types during the upload process. The flaw is specifically present in two core functions: do_updatecar and createcar, which handle car-related data updates and new car creation respectively. The absence of proper file type checking creates an exploitable condition that allows authenticated attackers with administrator privileges to bypass security controls and upload malicious files to the target server.
The technical implementation of this vulnerability demonstrates a classic insecure file upload vulnerability pattern that aligns with CWE-434, which describes the weakness of allowing untrusted input to be interpreted as executable code. When an authenticated administrator uploads files through these functions, the system does not verify the file extension, MIME type, or file content against a whitelist of approved formats. This oversight enables attackers to upload files with extensions such as .php, .jsp, or .asp that can be executed on the web server, potentially providing full control over the compromised system. The vulnerability is particularly dangerous because it requires only administrator-level access, which is often obtained through credential compromise, social engineering, or other attack vectors.
The operational impact of this vulnerability extends far beyond simple unauthorized file placement on the server. Once an attacker successfully uploads malicious code, they can execute arbitrary commands on the target system, potentially leading to complete system compromise. This scenario enables attackers to establish persistent backdoors, exfiltrate sensitive data, deploy additional malware, or use the compromised system as a launchpad for further attacks within the network. The vulnerability affects not just the WordPress installation but potentially the entire hosting environment, as the uploaded files can be executed in the context of the web server's privileges. This makes it a significant concern for organizations that rely on WordPress for their business operations and customer data management.
Organizations should immediately implement several mitigation strategies to address this vulnerability. The most critical action is to update to the latest version of the VikRentCar plugin where the file type validation has been properly implemented. Additionally, administrators should review and restrict file upload capabilities where possible, implementing strict file type whitelisting and content validation. Network monitoring should be enhanced to detect unusual file upload activities, and access controls should be strengthened to limit administrator privileges to only those users who absolutely require them. The vulnerability also highlights the importance of following security best practices such as those outlined in the OWASP Top Ten and NIST Cybersecurity Framework, which emphasize the need for input validation and privilege separation. From an ATT&CK framework perspective, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1059 (Command and Scripting Interpreter), demonstrating how initial access through vulnerable web applications can lead to full system compromise through remote code execution capabilities.