YonBIP Arbitrary File Read Scanner

YonBIP is a comprehensive enterprise management platform developed by Yonyou, widely used in corporations to manage various business functions such as finance, human resources, and supply chain. The software assists organizations with digital transformation efforts, providing tools for ERP and digital workspaces to enhance collaboration and operational efficiency. Primarily used by medium to large enterprises, YonBIP supports diverse industries and can be customized to meet specific business needs. Its advanced features and scalability make it suitable for handling complex enterprise workflows. Despite its robust capabilities, security vulnerabilities can arise if the software components or configurations are improperly managed. Ensuring the security of such a significant platform is crucial to maintaining business continuity and protecting sensitive data.

The Arbitrary File Read vulnerability in YonBIP allows malicious actors to access files on the server without authorization, potentially leading to unauthorized data access. Exploiting this vulnerability, attackers can read sensitive files from the server's file system, which may include confidential information or system credentials. This type of vulnerability often results from improper input validation, allowing directory traversal attacks. Successful exploitation can reveal critical details about the system’s directory structure and configuration settings. Addressing this vulnerability requires vigilance in validating and sanitizing input parameters to prevent unauthorized file access. Understanding the potential risks associated with this vulnerability highlights the importance of secure configuration and regular security audits.

The vulnerability originates from inadequate handling of file paths within the yonbiplogin component of YonBIP. Attackers exploit this by manipulating input to traverse directories and access files beyond intended directories using crafted URL requests. The endpoint affected by this vulnerability involves the path "/iuap-apcom-workbench/ucf-wh/yonbiplogin", where input can be manipulated to fetch files such as "/etc/passwd". Parameters are not correctly sanitized, allowing traversal sequences like "..%%%%252F" to bypass directory restrictions. This oversight in path validation enables the reading of files not meant to be accessible through the web server. Proper execution of attacks involves sending HTTP requests with paths adjusted to include directory traversal payloads.

Successful exploitation of this Arbitrary File Read vulnerability can lead to significant security breaches, including unauthorized access to sensitive files such as configuration files or system credentials. If critical information is accessed, attackers might use it for further infiltration campaigns or to manipulate system settings. Such potential data exposure could compromise user privacy and organizational data integrity. In extreme cases, exploitation might facilitate subsequent attacks like privilege escalation, unauthorized application access, or even full system compromise. Consequently, this vulnerability can affect an organization's reputation and lead to financial losses due to data breaches or compliance violations.