If you are trying to upload files to a PHP server, take a look at the .htaccess trick to execute code. If you are trying to upload files to an ASP server, take a look at the .config trick to execute …

If you find a vulnerability that allows you to modify env variables in PHP (and another one to upload files, although with more research maybe this can be bypassed), you could abuse this …

Uploaded files may pose a significant risk if not handled correctly. A remote attacker could send a multipart/form-data POST request with a specially-crafted filename or mime type and execute …

Dec 12, 2024 · For example, assume that we want to upload PHP file to execute webshell or reverse shell, but PHP files are rejected by the website. In this situation, we might be able to …

If you found a Local File Inclusion even if you don't have a session and session.auto_start is Off. If session.upload_progress.enabled is On and you provide the …

In this section, you'll learn how simple file upload functions can be used as a powerful vector for a number of high-severity attacks. We'll show you how to bypass common defense mechanisms …

Oct 23, 2024 · Follow this comprehensive walkthrough of the Hack The Box Academy File Upload Attacks Skills Assessment. Master file upload attack techniques to exploit vulnerable web …

Find a vulnerability to rename the file already uploaded (to change the extension). Find a Local File Inclusion vulnerability to execute the backdoor. Uploading a file with “.”, “..”, or “…” as its …

Security Alert: Attackers, aware of the temporary files' location, might exploit a Local File Inclusion vulnerability to execute code by accessing the file during upload. The challenge for …

When file_uploads=on is set in the PHP configuration file, it is possible to upload a file by POSTing it on any PHP file (RFC1867). This file is put to a temporary location on the server …