CVE-2024-57487 in Online Car Rental System
Summary
by MITRE • 01/13/2025
In Code-Projects Online Car Rental System 1.0, the file upload feature does not validate file extensions or MIME types allowing an attacker to upload a PHP shell without any restrictions and execute commands on the server.
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Analysis
by VulDB Data Team • 04/04/2025
The vulnerability identified as CVE-2024-57487 resides within the Code-Projects Online Car Rental System version 1.0, specifically targeting the file upload functionality that lacks proper validation mechanisms. This critical security flaw represents a classic example of insecure file upload handling that directly violates fundamental web application security principles and aligns with CWE-434 which addresses insecure file upload vulnerabilities. The system's failure to implement proper file extension and MIME type validation creates an exploitable pathway where malicious actors can bypass security controls and upload arbitrary files to the server infrastructure.
The technical implementation flaw stems from the absence of server-side validation controls that should normally verify file types against a whitelist of acceptable extensions and MIME types. When users attempt to upload files through the system's interface, the application accepts any file regardless of its content or intended purpose, creating an environment where attackers can upload malicious PHP shell scripts that execute arbitrary commands on the underlying server. This vulnerability operates at the intersection of multiple security domains including web application security, server-side execution control, and input validation mechanisms. The flaw essentially transforms the legitimate file upload feature into a command execution vector, enabling remote code execution capabilities that can be leveraged to compromise the entire server infrastructure.
The operational impact of this vulnerability extends far beyond simple unauthorized file uploads, as it provides attackers with persistent access to the server environment and enables a wide range of malicious activities. Once a PHP shell is successfully uploaded and executed, threat actors can establish backdoor access, escalate privileges, exfiltrate sensitive data, or use the compromised system as a launch point for further attacks within the network. The vulnerability affects the confidentiality, integrity, and availability of the system, potentially leading to complete system compromise and data breaches. From an attacker's perspective, this represents a low-effort, high-impact exploit that can be automated and requires minimal technical expertise to implement successfully.
Mitigation strategies should focus on implementing robust server-side validation controls that enforce strict file type restrictions, including the implementation of MIME type checking, extension validation against whitelists, and the use of secure file storage practices. Organizations should deploy proper input sanitization mechanisms, implement Content Security Policies, and consider using dedicated file validation libraries or frameworks that provide built-in protection against such vulnerabilities. The remediation process should also include regular security testing, including automated vulnerability scanning and manual penetration testing to identify similar weaknesses in other application components. This vulnerability demonstrates the critical importance of following secure coding practices and implementing defense-in-depth strategies as outlined in the MITRE ATT&CK framework's application security domain, where such flaws can be categorized under techniques involving command execution and persistence mechanisms that enable long-term access to compromised systems.