Tianrongxin Load Balancing System Arbitrary File Read Scanner

The Tianrongxin Load Balancing System is a highly reliable solution designed to optimize data center resources. It offers a variety of load balancing solutions, including link, server, and global load balancing. The system is widely used by organizations that require dependable data management capabilities. Its primary purpose is to ensure optimal performance and reliability in network operations. Companies implement this product to manage numerous incoming and outgoing data connections efficiently. It's valued for its ability to distribute workloads across multiple servers, increasing overall network reliability and uptime.

The Arbitrary File Read vulnerability in the Tianrongxin Load Balancing System allows attackers to access any file stored within the system. This vulnerability is significant because unauthorized file access could lead to the exposure of sensitive information. Exploiting this vulnerability does not require authentication, making it particularly dangerous. Attackers could potentially access configuration files, databases, or other critical data. The vulnerability results from improper validation of user input, allowing attackers to manipulate file paths. Addressing this issue promptly is essential to protect the data integrity of affected systems.

The vulnerability in the Tianrongxin Load Balancing System is caused by improper input validation in its file handling mechanism. Specifically, the vulnerable endpoint is '/change_lan.php', which processes user-submitted file paths. Due to inadequate sanitization, an attacker can craft a URL to trick the system into reading arbitrary files, like '/etc/passwd', using directory traversal sequences. This can lead to the exposure of sensitive system files. The GET method is used to send malicious file requests to the server, bypassing any initial security checks. The presence of null bytes '%00' can also be exploited to manipulate file paths and bypass checks.

If exploited, this vulnerability can lead to severe consequences, including data leaks of critical system files to unauthorized users. Sensitive information such as system configuration files, user credentials, and other private data may be compromised. Malicious actors could gain insights into the system's structure, potentially leading to further exploitation or attacks. Organizations may face data breaches that harm business continuity, reputation, and customer trust. Prolonged exposure to this vulnerability may result in financial and reputational losses for affected entities. Mitigating this vulnerability is crucial to ensure the security and privacy of critical system data.