How to Check For SQL Injection Easily

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In this blog post, we will learn how to check for SQL Injection easily using an online and free tool.

Before we get into how to check SQL Injection vulnerability online, let’s cover some elementary topics.

Summary For SQL Injections
What is SQL Injection
Some SQL Injection Types
Risk of SQL Injection Attacks

If you don’t need it, feel free to skip directly “How to Check For SQL Injection Easily”.

Summary For SQL Injections

If you need a refresher on SQL injections or are learning about them for the first time, this information will help give you a complete understanding of the topic.

What is SQL Injection?

SQL stands for Structured Query Language. It is a standard language for accessing databases.

SQL injection is a type of attack where the attacker inserts malicious SQL code into an input field in order to execute a malicious query on the database.

This can be done by inserting a SQL code into an input field that is used in a SQL query. If the input field is not properly sanitized, then the attacker can execute a malicious query on the database.

Some SQL Injection Types

The five types of SQL injections we want to mention are:

1. Blind SQL Injection: In this type of attack, the attacker does not know the structure of the database. The attacker can only insert a SQL code into an input field and then see the response from the server.

2. Error-based SQL Injection: In this type of attack, the attacker can easily learn the structure of the database. The attacker can insert a SQL code into an input field and then see the error message from the server.

3. Union-based SQL Injection: The attacker uses the UNION operator to combine the results of two or more SQL queries.

4. Time-based SQL Injection: The attacker can use some functions to make the server wait for a certain amount of time.

5. Out-of-band SQL: The attacker can use some functions to make the server communicate with another system.

Risk of SQL Injection Attacks

SQL injection attacks can be very dangerous. The attacker can insert a SQL code that can delete all the data in the database. The attacker can also insert a SQL code that can change the data in the database or get sensitive information from the database.

Also, depending on vulnerability types attackers can upload a file, read a file from the file system or run commands at operating system level.

How to Check For SQL Injection Easily

We will use one of our free and online tools named Online Generic SQL Injection Vulnerability Scanner

Our SQL Injection scanner can quickly check for SQL Injection vulnerability at your app *. Here are the 3 simple stages you may take.

Let’s assume you have a website named s4e.io. And you wish to scan some of its pages for SQL Injection vulnerabilities using an online tool.

1. Using Single Scanner

The simple and easiest way is using Single Scan features only if you want to scan a GET parameter.

For example, if you have a web page such as https://s4e.io/test?id=3 you can write it to URL area and click start scan. Our scanner will start in seconds and check SQL Injection vulnerability for ‘ id ‘ parameter.

Online Generic SQL Injection Vulnerability Scanner interface by S4E.io, featuring a high-level security scan tool to detect SQL injection risks in web applications. The interface displays a field for entering URLs and a 'Scan Now' button, with a summary of scan features, including high-risk level detection, a single scan type, and estimated completion time of 30 minutes. Ideal for asset owners seeking quick vulnerability insights.

2. Advanced Mode

The Advanced Mode is designed for scenarios requiring greater flexibility and precision when scanning for SQL Injection vulnerabilities. This mode combines automated detection and manual customization, ensuring you can test all input types effectively, even those not accessible directly from a webpage.

Here’s how to make the most of it:

Automated Detection for Input Fields
Simply provide the URL of your target page, and the scanner will automatically detect and parse form parameters. This feature ensures all potential inputs are included in the testing process without requiring manual selection.
Customizable Request Generation
For more advanced situations, you can create special requests appropriate to the structure of your application. Click the “Turn on Expert Mode” button as in the image below to access options such as setting specific HTTP methods, adding custom headers, or defining request bodies. This allows you to test hidden or complex input fields that might otherwise go unchecked.