[WHERE clause allowing retrieval of hidden data] – [SQL injection vulnerability ]

Target: Lab URL : https://portswigger.net/web-security/sql-injection/lab-retrieve-hidden-data Tools Used: Browser Vulnerability Summary： Type: SQL Injection Description: SQL injection vulnerability in WHERE clause allowing retrieval of hidden data Steps to Exploit： Observed the URL and found 'filter?category' being sent as a query in a SELECT statement to the database, so tried modifying the WHERE clause Guess that the command submitted to the database is: SELECT * FROM products WHERE category = 'Gifts' AND released = 1 Created the payload ?category=Gifts'+OR+1=1+-- to try to make it display all categories. Impact： an easy attack can cause the application to display all the products in any category, including categories that they don't want you know Remediation： Use parameterized queries / prepared statements Use server‑side input validation Escape and sanitize user input Lessons Learned： ' can terminate a string in SQL As 1=1 is always true, the query returns all items + represents a