PortSwigger Cross-site scripting Lab-7

Description

Reflected Cross-Site Scripting (XSS) occurs when an attacker injects malicious scripts into web pages that are immediately reflected back to the user, without being stored in the server. In the lab you are referring to—Reflected XSS into an attribute with angle brackets HTML-encoded—the challenge is to exploit a vulnerability where user inputs are embedded into an HTML attribute

Impact

• Data Theft
• Account Takeover
• Malware Delivery
• Reputation Damage
• Browser exploits

Preventation

• Proper Input Validation
• Contextual Output Encoding
• Using of security Headers
• Avoid Using user Input Directly in Attributes

Ananlysis

Step:-1 Acess the lab

Step:-2 Replace your input with the following payload to escape the quoted attribute and inject an event handler.

"onmouseover="alert(1)

then click to search button

Step:-3 Congratulations, Finally Solved the lab!

Thanks for Visiting