Cross-site Scripting (XSS)

By Ιούνιος 29, 2018Terminology

Cross-Site Scripting (XSS) attacks are a type of injection, in which malicious scripts are injected into otherwise benign and trusted websites. XSS attacks occur when an attacker uses a web application to send malicious code, generally in the form of a browser side script, to a different end user. Flaws that allow these attacks to succeed are quite widespread and occur anywhere a web application uses input from a user within the output it generates without validating or encoding it.
Non-persistent XSS: These are usually the most common types. Typically these are within HTTP query parameters and are used by server-side scripts to parse and display a page of results for the user.
Persistent XSS: These are when the data from the attacker is actually saved on the server and then displayed to the user, mimicking a normal page.

Read more: OWASP – XSS, X-XSS-Protection