CVE-2023-36319 in Stable
Summary
by MITRE • 09/20/2023
File Upload vulnerability in Openupload Stable v.0.4.3 allows a remote attacker to execute arbitrary code via the action parameter of the compress-inc.php file.
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Analysis
by VulDB Data Team • 10/13/2023
The CVE-2023-36319 vulnerability represents a critical file upload flaw in the Openupload Stable version 0.4.3 content management system that exposes organizations to remote code execution risks. This vulnerability specifically targets the compress-inc.php file where the action parameter fails to properly validate or sanitize user input, creating an exploitable entry point for malicious actors. The flaw resides in the application's file handling mechanisms where uploaded files are processed without adequate security checks, allowing attackers to upload malicious payloads that can be executed within the server environment. Such vulnerabilities typically arise from inadequate input validation and improper file type restrictions that fail to distinguish between legitimate and malicious file uploads.
The technical exploitation of this vulnerability follows a pattern consistent with common web application security flaws classified under CWE-434, which addresses insecure file upload handling. Attackers can leverage this weakness by crafting malicious files with specific extensions or embedded code that bypasses the application's security controls. The action parameter in compress-inc.php serves as the primary attack vector where unvalidated input allows arbitrary code execution, potentially enabling threat actors to gain full control over the affected server. This type of vulnerability aligns with ATT&CK technique T1190 which describes the use of compromised applications for code execution, particularly in web server contexts where file upload functionality is improperly secured. The vulnerability's impact extends beyond simple code execution to encompass complete system compromise, data theft, and potential lateral movement within network environments.
The operational impact of CVE-2023-36319 poses significant risks to organizations utilizing Openupload Stable 0.4.3, as successful exploitation can result in unauthorized access to sensitive data, system compromise, and potential service disruption. Remote attackers can upload malicious files such as web shells or backdoors that maintain persistent access to the compromised system, enabling them to perform reconnaissance, escalate privileges, and execute further attacks against network infrastructure. The vulnerability's remote nature eliminates the need for physical access or prior system compromise, making it particularly dangerous for organizations with limited network segmentation or monitoring capabilities. Organizations may experience data breaches, regulatory compliance violations, and reputational damage if this vulnerability is exploited, especially when the affected system hosts sensitive or confidential information. The vulnerability also increases the attack surface for advanced persistent threats that may use the compromised system as a foothold for broader network infiltration.
Mitigation strategies for CVE-2023-36319 should include immediate patching of the Openupload application to the latest stable version that addresses the file upload validation flaw. Organizations must implement comprehensive input validation controls that sanitize all file uploads, restrict file types to only those necessary for legitimate operations, and employ proper file name sanitization to prevent directory traversal attacks. Network segmentation and web application firewalls should be deployed to monitor and block suspicious file upload attempts, while regular security assessments and penetration testing can identify similar vulnerabilities in the application stack. Additionally, implementing proper access controls and monitoring mechanisms around file upload functionality can help detect and prevent unauthorized code execution attempts. The remediation process should also include reviewing and updating security configurations, conducting thorough vulnerability scans, and establishing incident response procedures specifically designed to handle file upload related compromises. Organizations should also consider implementing automated patch management systems to ensure timely application of security updates and maintain comprehensive logging of file upload activities for forensic analysis purposes.