Fanruan FineReport Remote Code Execution Scanner

Fanruan FineReport is a reporting tool widely used in business intelligence (BI) and data visualization landscapes. It allows companies to create various customizable reports, providing insights into business operations. Deployed across numerous sectors like finance, retail, and manufacturing, it serves as a critical tool for data-driven decisions. With its user-friendly interface, it assists analysts and business users in generating complex reports with relative ease. The product is well-integrated into enterprise IT infrastructures, often handling sensitive business data. Given its extensive use, ensuring the security of Fanruan FineReport is paramount.

Remote Code Execution (RCE) is among the most critical vulnerabilities impacting web applications. In this scenario, the vulnerability arises from improper deserialization practices within the FineReport/FineBI channel interface. The application's deserialization of untrusted data allows attackers to execute arbitrary code on the system. When this vulnerability is exploited, it potentially leads to complete control over the affected server. This high-severity fault emphasizes the necessity for secure coding practices, particularly avoiding insecure deserialization processes.

The vulnerability specifically lies within the deserialization process of Fanruan FineReport's channel interface. By sending serialized data to the /webroot/decision/remote/design/channel endpoint, attackers can exploit the FanRuan built-in CB chain. This manipulation may lead to arbitrary code execution in the application environment. The vulnerability stems from the application's inability to safely deserialize incoming data. The endpoint processing involves serialized Java objects which are presumed to be trustworthy, leaving a gap for exploitation if security measures are not in place. Such oversight can lead to severe consequences including unauthorized system access or data theft.

If exploited by malicious actors, this vulnerability could have catastrophic impacts on affected systems. It could allow unauthorized execution of code, leading to potential system compromise. Attackers might leverage this to steal or manipulate sensitive information, disrupt services, or deploy further malware. In essence, successful exploitation could provide attackers with escalated privileges and control over the entire application server. Companies reliant on Fanruan FineReport must consider the potential ramifications and prioritize mitigation steps to safeguard their assets.

REFERENCES

• https://blog.csdn.net/qq_51295677/article/details/131789320