The application uses a tracking cookie for analytics, and performs a SQL query containing the value of the submitted cookie. The results of the SQL query are not returned, and no error messages are displayed. But, it includes a message, if the query returns any rows. The db contains a table called users, with columns called username and password | Karthikeyan Nagaraj — Description This lab contains a blind SQL injection vulnerability. The application uses a tracking cookie for analytics, and performs a SQL query containing the value of the submitted cookie.