SQLi Vulnerable Application

What is SQL Injection (SQLi)?

SQL Injection (SQLi) is a type of security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. This is typically done by inserting malicious SQL code into a query via user input fields.

Why is SQLi Dangerous?

SQLi is one of the most dangerous vulnerabilities because it can allow attackers to:

• Bypass authentication mechanisms and access sensitive data.
• Alter, delete, or corrupt database data.
• Execute administrative operations on the database.
• Potentially execute commands on the underlying operating system.

How to Prevent SQLi?

• Use Parameterized Queries
• Use ORM Libraries
• Input Validation and Sanitization
• Least Privilege Principle

References

• OWASP: SQL Injection
• OWASP: SQL Injection Prevention Cheat Sheet