CVE-2024-9003 in JFlow
Summary
by MITRE • 09/20/2024
A vulnerability was found in Jinan Chicheng Company JFlow 2.0.0. It has been rated as problematic. This issue affects the function AttachmentUploadController of the file /WF/Ath/EntityMutliFile_Load.do of the component Attachment Handler. The manipulation of the argument oid leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 09/20/2024
The vulnerability identified as CVE-2024-9003 represents a critical access control flaw within the JFlow 2.0.0 workflow management system developed by Jinan Chicheng Company. This security weakness resides in the AttachmentUploadController component, specifically within the /WF/Ath/EntityMutliFile_Load.do file which serves as the attachment handler for the system. The flaw manifests when the oid parameter is manipulated, allowing unauthorized users to bypass intended access restrictions and gain inappropriate access to file upload functionalities. The vulnerability has been officially classified as problematic by security researchers and carries significant implications for organizations relying on this workflow system for business processes.
The technical nature of this vulnerability aligns with CWE-285, which addresses improper access control issues in software systems. The flaw occurs at the controller level where input validation and access control mechanisms fail to properly authenticate and authorize user requests. When the oid argument is manipulated, it appears that the system does not adequately verify whether the requesting user has legitimate permissions to access or upload files to the specified entity identifier. This creates a pathway for attackers to potentially upload malicious files or access restricted attachments that should be protected from unauthorized access. The vulnerability's remote exploitability means that attackers do not require physical access to the system or local network privileges to leverage this flaw.
The operational impact of CVE-2024-9003 extends beyond simple unauthorized access to represent a significant threat to data integrity and system security within organizations using the JFlow platform. Attackers could potentially upload malicious files containing malware, execute arbitrary code, or access sensitive business documents that should remain restricted to authorized personnel only. This vulnerability directly impacts the confidentiality and integrity of the system's file handling capabilities, potentially leading to data breaches, system compromise, or unauthorized modification of workflow processes. Organizations relying on this system may face regulatory compliance issues if sensitive data is exposed due to this access control failure.
Security professionals should consider this vulnerability in relation to ATT&CK technique T1078 which covers valid accounts and T1190 which addresses exploit public-facing applications. The lack of vendor response despite early notification creates additional risk for affected organizations, as they may not receive timely patches or official guidance for remediation. Organizations should immediately implement network-based mitigations such as firewall rules restricting access to the vulnerable endpoint, disable unnecessary file upload functionality, and monitor for suspicious activities related to the AttachmentUploadController. Additionally, implementing proper input validation and access control checks for all parameters, particularly those related to entity identifiers, would provide defense-in-depth measures against similar vulnerabilities. The public disclosure of exploitation methods further emphasizes the urgency for immediate remediation actions to protect organizational assets and maintain system integrity.