CVE-2023-51928 in YonBIP
Summary
by MITRE • 01/20/2024
An arbitrary file upload vulnerability in the nccloud.web.arcp.taskmonitor.action.ArcpUploadAction.doAction() method of YonBIP v3_23.05 allows attackers to execute arbitrary code via uploading a crafted file.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/16/2025
The vulnerability identified as CVE-2023-51928 represents a critical arbitrary file upload flaw within the YonBIP platform version 3_23.05, specifically affecting the nccloud.web.arcp.taskmonitor.action.ArcpUploadAction.doAction() method. This vulnerability stems from insufficient input validation and file type verification mechanisms that permit attackers to upload malicious files without proper authorization or security checks. The affected component resides within the arc task monitor functionality of the YonBIP system, which is commonly used for monitoring and managing business processes in enterprise environments. The flaw creates a significant attack surface that can be exploited by threat actors to gain unauthorized access to the underlying system infrastructure.
The technical implementation of this vulnerability occurs when the ArcpUploadAction.doAction() method processes file uploads without adequate validation of file extensions, content types, or file signatures. Attackers can craft malicious files with extensions that bypass typical security filters or upload files containing malicious code that gets executed during the upload process. This weakness allows for potential remote code execution attacks where attackers can upload web shells, malicious scripts, or other executable payloads that can be triggered by the application. The vulnerability is classified under CWE-434, which specifically addresses "Unrestricted Upload of File with Dangerous Type," indicating that the system fails to properly restrict file uploads to only safe and expected file types. The attack vector is particularly concerning because it enables attackers to directly manipulate the application's file handling capabilities and potentially gain persistent access to the system.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads and can lead to complete system compromise. An attacker who successfully exploits this vulnerability can execute arbitrary code on the target system, potentially leading to data exfiltration, system infiltration, and further lateral movement within the network. The vulnerability affects enterprise environments that rely on YonBIP for business process automation, making it particularly dangerous for organizations handling sensitive business data. The implications include potential disruption of business operations, unauthorized access to confidential information, and possible compliance violations. Organizations using this platform may face significant financial and reputational damage if exploited successfully. The vulnerability's impact is amplified by the fact that it allows for persistent access through uploaded web shells, enabling attackers to maintain control over the compromised system for extended periods.
Mitigation strategies for CVE-2023-51928 should include immediate implementation of file type validation, content verification, and proper file upload restrictions. Organizations should ensure that all file uploads are validated against a strict whitelist of allowed file extensions and MIME types, with additional checks for file content signatures to prevent file type confusion attacks. The system should implement proper file storage separation, ensuring uploaded files are not directly executable and are stored in restricted directories. Network segmentation and access controls should be enforced to limit the potential impact of successful exploitation. Regular security updates and patches should be applied immediately upon availability, following the vendor's security advisories. Security monitoring should be enhanced to detect unusual file upload patterns and potential exploitation attempts. The implementation of web application firewalls and intrusion detection systems can provide additional layers of protection. Organizations should also conduct comprehensive security assessments of their YonBIP installations and consider implementing the principle of least privilege for file upload functionality. This vulnerability aligns with ATT&CK technique T1190, which covers "Exploit Public-Facing Application," and T1059, covering "Command and Scripting Interpreter," highlighting the need for layered defensive measures against such attacks.