What is DOM cross-site scripting?

Definition. DOM Based XSS (or as it is called in some texts, “type-0 XSS”) is an XSS attack wherein the attack payload is executed as a result of modifying the DOM “environment” in the victim’s browser used by the original client side script, so that the client side code runs in an “unexpected” manner.

Can DOM XSS be stored?

The ultimate source of the data could have been from a request, or from a stored location on the client or the server. As such, you can have both Reflected Client XSS and Stored Client XSS. With these new definitions, the definition of DOM Based XSS doesn’t change.

Which of the following jQuery functions are also sinks that can lead to DOM XSS vulnerabilities?

DOM XSS in jQuery Another potential sink to look out for is jQuery’s $() selector function, which can be used to inject malicious objects into the DOM. jQuery used to be extremely popular, and a classic DOM XSS vulnerability was caused by websites using this selector in conjunction with the location.

Is DOM-based XSS persistent?

DOM-based XSS is a variant of both persistent and reflected XSS. In a DOM-based XSS attack, the malicious string is not actually parsed by the victim’s browser until the website’s legitimate JavaScript is executed.

What does HTML DOM stand for?

Document Object Model
The Document Object Model (DOM) is a programming API for HTML and XML documents. It defines the logical structure of documents and the way a document is accessed and manipulated.

What is the difference between cross-site scripting and SQL injection?

What is the difference between XSS and SQL injection? XSS is a client-side vulnerability that targets other application users, while SQL injection is a server-side vulnerability that targets the application’s database.

What is the difference between DOM XSS and reflected XSS?

Reflected XSS, where the malicious script comes from the current HTTP request. Stored XSS, where the malicious script comes from the website’s database. DOM-based XSS, where the vulnerability exists in client-side code rather than server-side code.

What is source and sink in DOM-based XSS?

Sources and Sinks Examples of DOM XSS sources are document. URL, cookies, referer header. Sinks: The sink is the reflection point that eventually executes (or helps with execution of) the malicious JavaScript injected through the source.