XSS Security Threats and Impact
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Questions and Answers

What is the result of an attacker executing malicious scripts in the victim's browser?

  • Defacing web sites
  • User sessions hijack and defacing web sites
  • Redirecting the user to malicious sites
  • All of the above (correct)

What is the primary condition that leads to Cross-Site Scripting (XSS)?

  • Escaping special characters in the DOM
  • Validating user input data
  • Storing user input data on the target server
  • Sending untrusted data to the client without validation (correct)

What type of XSS occurs when user input is stored on the target server?

  • Reflected XSS
  • Persistent XSS
  • Stored XSS (correct)
  • DOM Based XSS

What is the sink in DOM Based XSS?

<p>The DOM (C)</p> Signup and view all the answers

What should be done to prevent XSS attacks?

<p>Validating user input data and escaping special characters (B)</p> Signup and view all the answers

What happens in Reflected XSS?

<p>User input is immediately returned by a web application (C)</p> Signup and view all the answers

What is the type of attack being executed in the scenario described?

<p>Cross-site Scripting (XSS) attack (D)</p> Signup and view all the answers

What is the username and password used to login in the scenario?

<p>username: Tom, password: tom (B)</p> Signup and view all the answers

What is the purpose of robust validation mechanisms in preventing XSS attacks?

<p>To sanitize user input (B)</p> Signup and view all the answers

What should developers ensure when accepting user input?

<p>That the input is validated against a whitelist (D)</p> Signup and view all the answers

What is the impact of a successful XSS attack?

<p>Much more than just displaying a message box can be performed (C)</p> Signup and view all the answers

What should be escaped based on the HTML context?

<p>All untrusted data (D)</p> Signup and view all the answers

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