Cross-Site Scripting (XSS) constitutes a client-side web vulnerability enabling attackers to embed malicious scripts into web pages.
This vulnerability often arises from inadequate input sanitization/validation within web applications.
Attackers exploit XSS vulnerabilities to insert harmful code into web applications. Given that XSS is a client-side vulnerability, these scripts execute within the victim's browser.
XSS vulnerabilities impact web applications deficient in input validation and reliant on client-side scripting languages such as JavaScript, Flash, CSS, etc.
Web Basics
Practise
🔬 There are many vulnerable testing web apps like:
DVWA
The Damn Vulnerable Web Application (DVWA) is a web application built with PHP and MySQL intentionally designed to be susceptible to security vulnerabilities. Its primary purpose is to serve as a resource for security professionals to assess their skills and tools within a legal context. Additionally, it aids web developers in gaining a deeper understanding of the processes involved in securing web applications and facilitates learning about web application security for both students and teachers in a controlled classroom setting.
DVWA is designed to provide a platform for practicing various common web vulnerabilities at different difficulty levels, all presented through a simple and user-friendly interface. It's important to note that there are deliberate both documented and undocumented vulnerabilities within the software, encouraging users to explore and identify as many issues as possible.
DVWA - My Writeups
Theory and Lab platform
❗ Disclaimer
Never use tools and techniques on real IP addresses, hosts or networks without proper authorization!❗
