Roxy Fileman Improper File Process Scanner

Roxy Fileman is a popular file management tool integrated into web applications for managing uploads, organizing files, and performing file operations. It is widely adopted by developers for its ease of integration and flexibility. The product is primarily used by web developers, administrators, and content managers to facilitate file handling within applications. Due to its functionality, Roxy Fileman is often used in content management systems (CMS) and custom web applications, making it a target for vulnerabilities. Its design allows users to upload, rename, and move files, making it suitable for use within secure environments. However, improper configuration or insufficient validation often leads to security vulnerabilities.

The vulnerability detected in Roxy Fileman 1.4.4 allows for arbitrary file uploads, posing a high risk of unauthorized code execution. Attackers can exploit this vulnerability by bypassing upload restrictions using specific parameters. They can rename file extensions through the product's 'move' functionality, allowing potentially harmful files to execute. This vulnerability arises due to inadequate checks in Roxy Fileman’s file handling processes. By exploiting this flaw, malicious users can gain greater control over a web server. Detecting this vulnerability is crucial to prevent unauthorized code execution and maintain server integrity.

The technical details of the vulnerability involve bypassing the FORBIDDEN_UPLOADS settings, which are checked during file renaming. Attackers take advantage of this by using the 'move' function, which lacks strict checks, to rename files to harmful extensions. The vulnerable endpoints in this scenario are ‘upload.php’, ‘renamefile.php’, and ‘movefile.php’. An attacker can upload a simple payload initially and then rename it to a PHP file, enabling code execution on the server. This lack of validation on the move functionality makes it a critical point of exploitation.

If exploited, this vulnerability can lead to a range of serious consequences. Malicious actors could execute arbitrary code on the target server, gaining unauthorized access to sensitive data. The integrity and confidentiality of the server could be compromised, leading to data breaches. The server’s stability may be affected, potentially allowing further exploits or disruptions in service. Additionally, attackers could use the server as a launchpad for further attacks. Mitigating such vulnerabilities is vital to maintaining secure and reliable web applications.

REFERENCES

• https://www.exploit-db.com/exploits/39963