Use a web application firewall

Oct 13, 2025 by leolavanderia.com.br 13 views

Introduction

SQL Injection is a type of web application security vulnerability that allows an attacker to inject malicious SQL code into a web application's database. This can lead to unauthorized access to sensitive data, modification of data, or even complete control of the database. In this article, we will discuss the SQL Injection vulnerability found in the SQLInjection.java file at line 38, which has a severity of High (CWE-89).

Vulnerability Details

The SQL Injection vulnerability was first detected on 2025-03-10 11:56am GMT and is still present in the last scan performed on 2025-03-10 11:55am GMT. The vulnerability is located in the SQLInjection.java file at line 38.

Severity

The severity of this vulnerability is High, which means that it has a significant impact on the security of the application.

Vulnerability Type

The vulnerability type is SQL Injection, which is a type of web application security vulnerability that allows an attacker to inject malicious SQL code into a web application's database.

CWE

The CWE (Common Weakness Enumeration) ID for this vulnerability is CWE-89, which is a type of SQL Injection vulnerability.

File

The file where the vulnerability is located is SQLInjection.java, which is a Java file.

Data Flows

There is 1 data flow detected in this vulnerability.

Vulnerable Code

The vulnerable code is located in the SQLInjection.java file at lines 33-38. The code is as follows:

public class SQLInjection {
    public static void main(String[] args) {
        String query = "SELECT * FROM users WHERE username = '" + username + "' AND password = '" + password + "'";
        // ...
    }
}

In this code, the username and password variables are not properly sanitized, which allows an attacker to inject malicious SQL code into the database.

Data Flows

The data flows detected in this vulnerability are as follows:

username variable is used to construct the SQL query.
password variable is used to construct the SQL query.
The SQL query is executed against the database.

Secure Code Warrior Training Material

To help you learn more about SQL Injection and how to prevent it, we have provided some training material from Secure Code Warrior:

Training: Secure Code Warrior SQL Injection Training
Videos: Secure Code Warrior SQL Injection Video
Further Reading: OWASP SQL Injection Prevention Cheat Sheet, OWASP SQL Injection, OWASP Query Parameterization Cheat Sheet

Suppress Finding

If you believe that this finding is a false alarm or an acceptable risk, you can suppress it by clicking on the "Suppress Finding" button.

Conclusion

In conclusion, the SQL Injection vulnerability found in the SQLInjection.java file at line 38 is a High severity vulnerability that can lead to unauthorized access to sensitive data, modification of data, or even complete control of the database. It is essential to properly sanitize user input and use parameterized queries to prevent this type of vulnerability. We hope that this article has helped you learn more about SQL Injection and how to prevent it.

Recommendations

To prevent SQL Injection vulnerabilities, we recommend the following:

Use parameterized queries: Instead of concatenating user input into the SQL query, use parameterized queries to prevent SQL Injection.
Sanitize user input: Properly sanitize user input to prevent malicious SQL code from being injected into the database.
Use prepared statements: Use prepared statements to prevent SQL Injection.
Use a web application firewall: Use a web application firewall to detect and prevent SQL Injection attacks.

By following these recommendations, you can help prevent SQL Injection vulnerabilities and keep your application secure.
Code Security Finding: SQL Injection (CWE-89, High Severity) in SQLInjection.java:38 [dev] - Q&A

Introduction

In our previous article, we discussed the SQL Injection vulnerability found in the SQLInjection.java file at line 38, which has a severity of High (CWE-89). In this article, we will answer some frequently asked questions (FAQs) related to this vulnerability.

Q&A

Q: What is SQL Injection?

A: SQL Injection is a type of web application security vulnerability that allows an attacker to inject malicious SQL code into a web application's database. This can lead to unauthorized access to sensitive data, modification of data, or even complete control of the database.

Q: What is CWE-89?

A: CWE-89 is a type of SQL Injection vulnerability. It is a Common Weakness Enumeration (CWE) ID that represents a vulnerability in a web application's database.

Q: What is the severity of this vulnerability?

A: The severity of this vulnerability is High. This means that it has a significant impact on the security of the application.

Q: How can I prevent SQL Injection vulnerabilities?

A: To prevent SQL Injection vulnerabilities, you can use the following best practices:

Use parameterized queries instead of concatenating user input into the SQL query.
Sanitize user input to prevent malicious SQL code from being injected into the database.
Use prepared statements to prevent SQL Injection.
Use a web application firewall to detect and prevent SQL Injection attacks.

Q: What is the difference between a parameterized query and a prepared statement?

A: A parameterized query is a query that uses placeholders for user input, while a prepared statement is a query that is compiled and executed separately from the user input. Both methods can help prevent SQL Injection vulnerabilities.

Q: Can I use a web application firewall to prevent SQL Injection attacks?

A: Yes, you can use a web application firewall to detect and prevent SQL Injection attacks. A web application firewall can help block malicious traffic and prevent SQL Injection attacks.

Q: How can I sanitize user input to prevent SQL Injection?

A: To sanitize user input, you can use the following methods:

Use a whitelist to only allow certain characters in user input.
Use a blacklist to block certain characters in user input.
Use a regular expression to validate user input.
Use a library or framework that provides input validation and sanitization.

Q: What is the impact of a SQL Injection vulnerability?

A: The impact of a SQL Injection vulnerability can be significant. It can lead to unauthorized access to sensitive data, modification of data, or even complete control of the database.

Q: How can I detect a SQL Injection vulnerability?

A: To detect a SQL Injection vulnerability, you can use the following methods:

Use a web application scanner to scan your application for vulnerabilities.
Use a penetration tester to test your application for vulnerabilities.
Use a web application firewall to detect and prevent SQL Injection attacks.

Conclusion

In conclusion, SQL Injection is a type of web application security vulnerability that can have a significant impact on the security of an application. By using parameterized queries, sanitizing user input, and using prepared statements, you can help prevent SQL Injection vulnerabilities. We hope that this article has helped you learn more about SQL Injection and how to prevent it.

Recommendations

To prevent SQL Injection vulnerabilities, we recommend the following:

Use parameterized queries instead of concatenating user input into the SQL query.
Sanitize user input to prevent malicious SQL code from being injected into the database.
Use prepared statements to prevent SQL Injection.
Use a web application firewall to detect and prevent SQL Injection attacks.
Use a web application scanner to scan your application for vulnerabilities.
Use a penetration tester to test your application for vulnerabilities.

By following these recommendations, you can help prevent SQL Injection vulnerabilities and keep your application secure.