Lesson 9: File Upload Vulnerabilities

File upload vulnerabilities occur first because you accept some sort of files from the user on your system. These files are not sanitized and can be unwanted files like zip which are so big that system resources are exhausted or exe files which can compromise your system if executed. So be sure before you allow users to upload files to your system.

Links in the video: An Introduction to Web-shells - https://www.acunetix.com/blog/articles/introduction-web-shells-part-1/?utm_source=hacksplaining&utm_medium=post&utm_campaign=articlelink Unrestricted File Upload Vulnerabilities - https://owasp.org/www-community/vulnerabilities/Unrestricted_File_Upload