A Detailed Guide to the OWASP Top 10 - #3 Cross-Site Scripting Attacks

The video tutorial explains cross-site scripting (XSS) attacks, a type of client-side web attack targeting users' browsers with malicious code. Unlike SQL injection attacks, which target databases, XSS attacks are less dangerous but still pose significant risks, such as hijacking cookies and enabling session hijacking. The tutorial demonstrates how attackers inject malicious scripts into vulnerable web pages and provides an example using JavaScript. It concludes with prevention strategies, emphasizing the importance of filtering user inputs to block malicious scripts.

What is the primary target of a Cross-Site Scripting (XSS) attack?

• Database servers

• Victim's browser

• Operating systems

• Network routers

Which scripting language is most commonly exploited in XSS attacks?

• CSS

• Ruby

• JavaScript

• Python

How does an XSS attack compare to an SQL injection attack in terms of danger?

• XSS is more dangerous

• SQL injection is more dangerous

• Neither is dangerous

• Both are equally dangerous

What can a hacker achieve by hijacking cookies through an XSS attack?

• Access to the server's root directory

• Modify the website's HTML structure

• Control over the victim's browser

• Steal the victim's session data

What is a necessary condition for an XSS attack to be successful?

• The victim must use a specific browser

• The server must be running on Linux

• The web page must be vulnerable to script injection

• The attacker must have physical access to the server

In the example provided, what was the effect of the injected script on the website?

• It displayed a pop-up message

• It crashed the browser

• It deleted all user comments

• It redirected users to a different website

What is a simple method to prevent XSS attacks?

• Encrypting all user data

• Filtering user inputs

• Using a firewall

• Disabling JavaScript on the server