CVE-2020-24202 in House Rental
Summary
by MITRE
File Upload component in Projects World House Rental v1.0 suffers from an arbitrary file upload vulnerability with regular users, which allows remote attackers to conduct code execution.
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Analysis
by VulDB Data Team • 08/28/2020
The vulnerability identified as CVE-2020-24202 affects the Projects World House Rental v1.0 application, specifically within its file upload component. This represents a critical security flaw that undermines the application's integrity and exposes it to remote code execution attacks. The vulnerability manifests when regular users can upload files without proper validation mechanisms, creating an avenue for malicious actors to bypass security controls and potentially compromise the entire system. The affected component likely handles user-uploaded content such as images, documents, or other media files, but fails to implement adequate restrictions on file types or content validation.
The technical flaw stems from insufficient input validation and access control measures within the file upload functionality. Attackers can exploit this weakness by uploading malicious files with extensions that are not properly filtered or rejected by the application. The vulnerability is particularly concerning because it allows regular users to perform actions that should typically be restricted to administrators or privileged accounts. This arbitrary file upload vulnerability enables attackers to execute arbitrary code on the target system, potentially leading to complete system compromise. The flaw aligns with CWE-434, which describes insecure upload of code or files, and represents a classic example of insufficient input validation where the application fails to properly sanitize user-supplied data before processing.
The operational impact of this vulnerability extends beyond simple data compromise, as it provides attackers with persistent access to the system and the ability to escalate privileges. Once an attacker successfully uploads malicious code, they can establish backdoors, steal sensitive data, modify system configurations, or use the compromised system as a launching point for further attacks within the network. The vulnerability creates a persistent threat vector that can be exploited repeatedly, making it particularly dangerous for production environments. According to ATT&CK framework, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1059 (Command and Scripting Interpreter), as attackers can leverage the upload functionality to execute commands on the target system. The impact is significant for organizations using this software, as it could result in data breaches, service disruption, and potential regulatory compliance violations.
Mitigation strategies for CVE-2020-24202 should focus on implementing comprehensive file upload validation and access control measures. Organizations must immediately restrict file upload capabilities to authenticated users with appropriate privileges and implement strict file type filtering based on content validation rather than simple extension checks. The application should employ robust input sanitization techniques, including MIME type verification, file content analysis, and the use of secure file storage mechanisms that prevent direct execution of uploaded files. Security measures should include disabling script execution in upload directories, implementing proper file naming conventions, and regularly monitoring upload activities for suspicious behavior. Additionally, organizations should consider implementing web application firewalls, input validation layers, and regular security assessments to identify similar vulnerabilities. The remediation process should involve updating the application to a patched version, if available, or implementing compensating controls that address the root cause of the vulnerability through proper access control and file validation mechanisms.