CVE-2023-41599 Scanner

JFinalCMS is a content management system used by developers to create dynamic web applications easily and efficiently. It is known for its user-friendly interface and flexibility, adaptable to various business needs. Companies and individual developers utilize it to manage website content, organize digital assets, and facilitate communication across different departments. The tool supports integration with different plug-ins to extend its functionality, making it suitable for various web applications. With its robust architecture, JFinalCMS aids in building customizable and scalable websites. Its open-source status allows developers to participate in enhancing its features and security.

Directory Traversal is a security vulnerability that allows attackers to access restricted directories and files stored outside the web root folder. By manipulating variables referencing files with “dot-dot-slash” sequences, attackers may exploit the web server. This form of attack could lead to unauthorized access to files such as configuration files, server logs, and other sensitive information. The vulnerability occurs due to inadequate input validation and insufficient security checks. It allows attackers to traverse through the directory and access files that should be out of reach. Understanding the depth and potential of this vulnerability can aid in preventing exploitation.

The Directory Traversal vulnerability in JFinalCMS v5.0.0 is located in the file /common/DownController.java. The issue is based on input validation missing for the 'filekey' parameter, allowing attackers to exploit file path navigation. Typically, an attacker may append a relative path to the parameter in the GET request to access files outside the intended directory. This can be used to access system files if protective measures are not enforced. The presence of this vulnerability makes certain data stored on the server susceptible to unauthorized access. Attackers using this vulnerability need no authentication, which further exacerbates the security risk.

Exploitation of this Directory Traversal vulnerability can result in unauthorized file reading, potentially revealing sensitive data. This can include application configuration files and operating system files, whose exposure may lead to a larger security compromise. Such information disclosure could enable further targeted attacks on the application or underlying server. Leveraging this vulnerability, an attacker could gain insights into the operational structure of the web application, aiding in crafting more potent attacks. Overall, it compromises data confidentiality, integrity, and potentially the availability of the application if used in conjunction with other vulnerabilities.

REFERENCES

• https://github.com/wy876/POC/blob/main/JFinalCMS%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E(CVE-2023-41599).md
• https://github.com/wy876/POC
• https://github.com/xingchennb/POC-
• https://github.com/Marco-zcl/POC