SQL injection is a web security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. This can be done by inserting malicious code into an input field that is used to pass data to the database. If the application does not properly validate the input, the malicious code can be executed by the database, which can lead to a variety of attacks, including data theft, unauthorized access, and denial of service.
There are a number of ways to check for SQL injection vulnerabilities. One common method is to use a web application scanner. These scanners can be used to automatically scan a web application for vulnerabilities, including SQL injection vulnerabilities. Another method is to manually test the application for vulnerabilities. This can be done by using a variety of techniques, such as fuzzing and penetration testing.
