Discuz! hux_wx Local File Inclusion (LFI) Scanner

Discuz! is a widely used community forum software that allows users to create and manage discussion boards. Designed for web communities, it provides a range of features to facilitate communication among members. The platform supports various plugins to extend its functionalities, and the hux_wx_hux_wx is one such plugin used to enhance user interaction. Discuz! is popular among businesses, interest groups, and online communities for its flexibility and customizable features. The software is developed and maintained by a community of developers dedicated to delivering robust solutions for online forums. However, like any software, it can be susceptible to vulnerabilities if not properly managed and updated.

The Local File Inclusion (LFI) vulnerability allows attackers to include files on a server through a script on the web application. Exploited through web scripts, this vulnerability may lead to unauthorized access or execution of server-side files. LFIs are often leveraged to execute local scripts, access sensitive files, or even facilitate further attacks, such as Remote Code Execution. When present in Discuz! plugins like hux_wx_hux_wx, LFIs could significantly compromise system integrity. Such vulnerabilities occur due to inadequate input validation, failing to sanitize and filter file paths submitted by users. Attackers typically exploit LFI by manipulating input fields to navigate to unintended directories.

Mainly affecting the 'plugin.php' script, the LFI vulnerability in the Discuz! hux_wx_hux_wx plugin is triggered by manipulating the 'mod' parameter. When user input is not adequately sanitized, attackers can exploit file paths to include unauthorized files. Parameters like 'uid' and 'mod' in specific URL paths become conduits for exploitation, escaping restrictive directories. This setup creates a situation where attackers could insert path traversal sequences, enabling them to access sensitive files like 'robots.txt'. The vulnerability highlights the importance of validating and constraining user inputs to mitigate such risks.

If exploited, the Local File Inclusion vulnerability could lead to severe consequences for affected servers. Attackers may gain access to sensitive information, execute unauthorized commands, or elevate their privileges within the system. The compromise might extend to data theft or corruption, posing a significant risk to the forum's confidentiality, integrity, and availability. Additionally, LFIs can serve as stepping stones for further attacks, including remote code execution, potentially causing extensive damage. The exploitation of such vulnerabilities could result in reputational harm, legal implications, and financial losses for the affected entities.

REFERENCES

• http://discuz.net/