file uploads

Introduction While there are numerous techniques for testing file upload vulnerabilities (including tools such as Fuxploider https://github.com/almandin/fuxploider.git) a lesser-known method is extension truncation. In this technique, an otherwise disallowed file is renamed to include an additional extension, preceded by a large number of spaces. This approach can potentially bypass file extension whitelisting mechanisms, causing the application to accept and store the original (potentially malicious) file. As a result, users who later download the file may inadvertently receive the malicious payload. [Read More]

Introduction Identifying vulnerabilities in file upload functionality is often a tedious and time-consuming task, and many potential issues may be overlooked without automation. Fortunately Fuxploider (available at https://github.com/almandin/fuxploider.git) significantly streamlines this process. Fuxploider is an open-source penetration testing tool designed to automate the detection and exploitation of flaws in file upload forms. It identifies the allowed file types and determines the most effective technique for uploading web shells or other malicious files to the target web server. [Read More]