CVE-2024-50652 in java_shop
Summary
by MITRE • 11/15/2024
A file upload vulnerability in java_shop 1.0 allows attackers to upload arbitrary files by modifying the avatar function.
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Analysis
by VulDB Data Team • 11/22/2024
The vulnerability identified as CVE-2024-50652 represents a critical file upload flaw within the java_shop 1.0 web application that exposes organizations to significant security risks. This vulnerability specifically targets the avatar function, which serves as a user profile image upload mechanism. The flaw allows malicious actors to bypass normal file validation controls and execute arbitrary file uploads, potentially leading to remote code execution or complete system compromise. The vulnerability stems from insufficient input validation and improper file type checking within the application's upload handling logic, creating an exploitable pathway for attackers to gain unauthorized access to the system's file storage mechanisms.
The technical implementation of this vulnerability demonstrates a classic lack of proper file validation controls that aligns with CWE-434, which addresses insecure file upload vulnerabilities. Attackers can manipulate the avatar upload functionality by crafting malicious file names or extensions that evade detection, allowing them to upload executable files such as php, aspx, or jsp scripts. The vulnerability's exploitation requires minimal technical sophistication and can be accomplished through simple HTTP requests that modify the file upload parameters or content type headers. This flaw directly violates security best practices outlined in the OWASP Top Ten 2021, specifically addressing the risk of insecure file uploads that can lead to server-side code execution and persistent threats against web applications.
From an operational impact perspective, this vulnerability creates multiple attack vectors that can be leveraged by threat actors to establish persistent access to the affected system. The ability to upload arbitrary files provides attackers with opportunities to deploy web shells, reverse shells, or other malicious payloads that can be used to maintain long-term access to the compromised environment. The vulnerability can also facilitate lateral movement within networks if the web application shares resources with other systems, potentially leading to broader security breaches. The impact extends beyond immediate code execution capabilities to include data exfiltration, system disruption, and potential regulatory compliance violations that organizations may face due to inadequate security controls. The vulnerability's presence in a commercial e-commerce platform like java_shop 1.0 increases the risk profile significantly, as such systems typically contain sensitive user data, payment information, and business-critical resources.
The mitigation strategies for CVE-2024-50652 should implement comprehensive file upload security controls that align with industry standards and threat modeling frameworks such as those referenced in the MITRE ATT&CK framework's T1190 technique for exploiting vulnerabilities in web applications. Organizations must implement strict file type validation using allowlists rather than denylists, enforce proper file extension checking, and implement secure file storage mechanisms that prevent execution of uploaded content. The application should validate file content using magic number detection rather than relying solely on file extensions, and implement proper file naming conventions that prevent directory traversal attacks. Additionally, the system should employ robust access controls that restrict upload functionality to authorized users only and implement logging mechanisms to detect suspicious upload activities. Security teams should also consider implementing web application firewalls and intrusion detection systems that can monitor for anomalous upload patterns. The remediation process must include thorough code review and security testing of the avatar functionality to ensure that all potential bypass paths have been addressed, while also implementing proper error handling that does not expose system information to potential attackers. Regular security assessments and penetration testing should be conducted to validate that the implemented controls remain effective against evolving threat landscape developments.