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Certified Ethical Hacker (CEH) Practice Question

During a web application assessment, you find that the value of the id parameter in the URL is inserted directly into a MySQL query as a numeric literal. Any single quotes you supply are stripped, and the application displays only generic error pages. You want to verify the vulnerability using a time-based technique that will not disclose data but will produce a measurable delay if the payload is executed. Which of the following inputs is the most suitable choice for confirming blind SQL injection in this situation?

  • 7'; WAITFOR DELAY '0:0:5'--

  • 7 AND SLEEP(5)--

  • 7); dbms_pipe.receive_message('a',5);--

  • 7); SELECT pg_sleep(5);--

Certified Ethical Hacker (CEH)
Web Application Hacking
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