What is a DOM based XSS attack and why?
DOM-based XSS is an attack that modifies the domain object model (DOM) on the client side (the browser). In a DOM-based attacks, the HTTP response on the server side does not change. Rather, a malicious change in the DOM environment causes client code to run unexpectedly.
What’s the difference between DOM based XSS and reflected XSS?
Reflected and Stored XSS are server side injection issues while DOM based XSS is a client (browser) side injection issue. All of this code originates on the server, which means it is the application owner’s responsibility to make it safe from XSS, regardless of the type of XSS flaw it is. Also, XSS attacks always execute in the browser.
Which is cheat sheet addresses reflected and stored XSS?
The XSS Prevention Cheatsheet does an excellent job of addressing Reflected and Stored XSS. This cheatsheet addresses DOM (Document Object Model) based XSS and is an extension (and assumes comprehension of) the XSS Prevention Cheatsheet.
Is it possible to XSS an IMG in JavaScript?
No, in modern browsers no XSS is possible via the style or src attribute of an tag. So neither of these would execute the JS code in any up-to-date browser: Support for Javascript in CSS attributes has long been abandoned. You can find some older references about it here.
What does XSS stand for in web application?
DOM XSS stands for Document Object Model-based Cross-site Scripting. A DOM-based XSS attack is possible if the web application writes data to the Document Object Model without proper sanitization.
What kind of vulnerability is cross site scripting?
Today Cross-site Scripting (XSS) is a well known web application vulnerability among developers, so there is no need to explain what an XSS flaw is.
What’s the difference between reflected and DOM based XSS?
Security researchers have already identified DOM Based XSS issues in high profile internet companies such as Google, Yahoo and Alexa. One of the biggest differences between DOM Based XSS and Reflected or Stored XSS vulnerabilities is that DOM Based XSS cannot be stopped by server-side filters.