CVE-2022-32019 in Car Rental Management System
Summary
by MITRE • 06/02/2022
Car Rental Management System v1.0 is vulnerable to Arbitrary code execution via car-rental-management-system/admin/ajax.php?action=save_car.
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Analysis
by VulDB Data Team • 06/05/2022
The Car Rental Management System version 1.0 presents a critical security vulnerability that allows attackers to execute arbitrary code through the administrative interface. This flaw exists within the ajax.php endpoint specifically when processing the save_car action parameter, creating a pathway for remote code execution that could compromise the entire system. The vulnerability stems from insufficient input validation and sanitization mechanisms that fail to properly filter user-supplied data before processing. Attackers can exploit this weakness by crafting malicious payloads that are then executed within the context of the web application, potentially leading to full system compromise. The attack vector is particularly concerning as it targets the administrative functionality of the system, which typically operates with elevated privileges and access to sensitive data. This vulnerability aligns with CWE-94, which describes improper control of generation of code, and represents a classic example of code injection where untrusted data is directly incorporated into executable code without proper sanitization. The system's failure to implement proper parameter validation creates an environment where malicious input can bypass security controls and execute unintended operations.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and data breach potential. Once an attacker successfully exploits this vulnerability, they can gain unauthorized access to the underlying system, potentially allowing them to install backdoors, exfiltrate sensitive customer data, modify rental records, or even escalate privileges to gain administrative control. The administrative interface typically contains sensitive information including customer personal details, rental histories, payment information, and system configuration data that would be of significant value to threat actors. The vulnerability's accessibility through the web interface means that attackers do not require physical access or specialized knowledge of the system's internal architecture to exploit it. This makes the attack surface significantly larger and increases the likelihood of successful exploitation. The system's lack of proper input validation creates a persistent risk that cannot be easily mitigated through network-level security controls alone, as the vulnerability exists at the application logic level where traditional firewalls and intrusion detection systems may not effectively detect malicious activity.
Security mitigations for this vulnerability must address both the immediate code-level issues and implement comprehensive defensive measures to prevent similar flaws from occurring in the future. The primary fix involves implementing strict input validation and sanitization procedures that filter all user-supplied data before processing, particularly for parameters used in dynamic code generation or file operations. The system should employ parameterized queries and avoid direct concatenation of user input into executable code segments. Additionally, implementing proper access controls and authentication mechanisms within the administrative interface is essential to limit the scope of potential exploitation. Organizations should also consider implementing web application firewalls and runtime application self-protection measures to detect and prevent exploitation attempts. The vulnerability demonstrates the importance of following secure coding practices and adhering to the principle of least privilege in system design. Regular security assessments and code reviews should be conducted to identify similar flaws in other components of the system. This incident highlights the necessity of implementing defense-in-depth strategies that combine multiple security controls to protect against various attack vectors and reduce the overall risk exposure of critical business applications.
The exploitation of this vulnerability aligns with several tactics described in the mitre att&ck framework, particularly those related to command and control operations and privilege escalation. Attackers may use the arbitrary code execution capability to establish persistent access through backdoor installation or to move laterally within the network environment. The administrative access provided by this vulnerability enables attackers to perform actions that would otherwise require legitimate administrative credentials, making the attack more stealthy and difficult to detect. Organizations should monitor for unusual administrative activities and implement proper logging and alerting mechanisms to detect exploitation attempts. The vulnerability also represents a common pattern in web application security where insufficient input validation leads to code injection flaws, making it a frequent target for automated scanning tools and exploit frameworks. Security teams should prioritize patching this vulnerability and implementing compensating controls to protect against similar attacks targeting other components of the system. The incident underscores the importance of maintaining up-to-date security practices and the need for comprehensive security awareness training for developers to prevent similar flaws from being introduced during the software development lifecycle.