UFIDA NC Remote Code Execution Scanner

UFIDA NC is a widely used enterprise management software in China, designed by Yonyou. It supports various business and management functions for organizations including financial accounting, human resources, and supply chain management. UFIDA NC is utilized by various enterprises and institutions aiming to streamline their processes efficiently. The software is known for its customizable and scalable solutions, which cater to varying business sizes and requirements. Deployed in numerous industries, UFIDA NC facilitates in better decision making by providing comprehensive data analysis and reports. As an integrated enterprise resource planning (ERP) system, it helps organizations optimize and automate their operations.

Remote Code Execution (RCE) is a critical vulnerability that allows attackers to execute arbitrary code on a vulnerable system. This particular vulnerability arises from improper handling and deserialization of user-supplied data in UFIDA NC. Attackers can exploit this by sending specially crafted requests, leading to unauthorized execution of commands on the server. Such a vulnerability poses severe security risks, including potential data breaches and system compromise. The inherent risks involve unauthorized access to sensitive information and potential disruption of services. While the official fix involves deserialization whitelist control, the likelihood of similar vulnerabilities remains high.

The technical details of this RCE vulnerability leverage deserialization of untrusted data within the NCMessageServlet. When malicious serialized objects are supplied, the server processes them without adequate validation, leading to execution of arbitrary code. Vulnerable endpoints include the servlet path "/servlet/~baseapp/nc.message.bs.NCMessageServlet" where data deserialization occurs. This flaw highlights the lack of proper input validation and sanitization, allowing exploitation via manipulated request payloads. Additional indicators involve specific headers and response tokens that confirm the vulnerability presence. Addressing this entails ensuring proper authentication and input validation within the application.

Exploitation of this vulnerability could have severe repercussions. Potential effects include unauthorized command execution, which may lead to system takeovers, data theft, or further propagation of attacks within the network. Compromised systems could serve as entry points for broader network infiltration, resulting in extensive data loss and operational disruption. Such vulnerabilities can cause reputational damage and legal implications for affected organizations. Bearing these risks in mind, it is crucial to undertake measures to mitigate such exploits by ensuring robust security practices are in place.

REFERENCES

• https://github.com/zan8in/afrog/blob/main/v2/pocs/afrog-pocs/vulnerability/yonyou-nc-ncmessageservlet-rce.yaml