Send the Request to the Repeater

Oct 13, 2025 by talynt.org 141 views

[🐛] Entire DB schema definition could be exfiltrated via SQL Injection

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, and even complete control over the database. In this article, we will explore a specific vulnerability in the Juice Shop application that allows an attacker to exfiltrate the entire DB schema definition via SQL Injection.

The Juice Shop application is a popular web application that is used for training and testing web application security skills. It is designed to mimic a real-world e-commerce application and provides a realistic environment for testing and learning. However, like any other web application, it is not immune to security vulnerabilities. In this case, we will explore a vulnerability that allows an attacker to exfiltrate the entire DB schema definition via SQL Injection.

Before we begin, we need to ensure that we have the necessary tools and environment set up. We will need to install and configure Burp Suite to work with the Juice Shop application. Burp Suite is a popular web application security testing tool that provides a comprehensive set of features for testing and analyzing web applications.

To reproduce this vulnerability, follow these steps:

Open Burp Suite: Open Burp Suite and configure it to work with the Juice Shop application.
Open the Juice Shop App: Open the Juice Shop application via Burp Suite browser.
Send the Search Request: Send the search request and intercept the POST request via Burp Suite.
Send the Request to the Repeater: Send the request to the Repeater.
Turn Off the Interception: Turn off the interception.
Go to Repeater: Go to the Repeater.
Change the Request URL: Change the request URL to /rest/product/search?q=') and send it.
Pay Attention to the Response: Pay attention to the response.
Change the Request: Change the ') to '))%20--%20 in the request and send it.
Pay Attention to the Response: Pay attention to the response.
Change the Request: Change the '))%20--%20 to '))%20order%20by%209%20--%20 in the request and send it.
Pay Attention to the Response: Pay attention to the response.
Change the Request: Change the '))%20order%20by%209%20--%20 to nonexistedvalue'))%20union%20all%20select%201,2,3,4,5,6,7,8,9%20--%20 in the request and send it.
Pay Attention to the Response: Pay attention to the response.
Change the Request: Change the nonexistedvalue'))%20union%20all%20select%201,2,3,4,5,6,7,8,9%20--%20 to anyvalue'))%20union%20all%20select%201,2,3,sql,5,6,7,8,9%20from%20sqlite_master%20--%20 in the request and send it.
Pay Attention to the Response: Pay attention to the response.

The expected result is that only the administrator should be able to access his/her account.

The environment used for this vulnerability is Mozilla Firefox Version 136.0 (64-bit) release v.17.1.1.

The priority of this vulnerability is High.

The severity of this vulnerability is Medium.

The attachments for this vulnerability are:

In conclusion, the Juice Shop application is vulnerable to a SQL Injection attack that allows an attacker to exfiltrate the entire DB schema definition. This vulnerability can be exploited by an attacker to gain unauthorized access to sensitive data and even complete control over the database. It is essential to address this vulnerability and ensure that the application is secure and protected from such attacks.
[🐛] Entire DB schema definition could be exfiltrated via SQL Injection: Q&A

In our previous article, we explored a specific vulnerability in the Juice Shop application that allows an attacker to exfiltrate the entire DB schema definition via SQL Injection. In this article, we will provide a Q&A section to address some of the common questions and concerns related to this vulnerability.

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, and even complete control over the database.

A: SQL Injection works by injecting malicious SQL code into a web application's database through user input. When the user input is not properly sanitized, the malicious SQL code is executed, allowing the attacker to access sensitive data or modify the database.

A: The impact of this vulnerability is significant, as it allows an attacker to exfiltrate the entire DB schema definition. This can lead to unauthorized access to sensitive data, modification of data, and even complete control over the database.

A: To prevent SQL Injection attacks, it is essential to follow best practices for secure coding, such as:

Using prepared statements and parameterized queries
Validating and sanitizing user input
Using a Web Application Firewall (WAF)
Regularly updating and patching software and dependencies

A: To detect SQL Injection attacks, you can use various tools and techniques, such as:

Using a Web Application Firewall (WAF)
Monitoring database logs and activity
Using intrusion detection systems (IDS)
Regularly scanning and testing web applications for vulnerabilities

A: To fix this vulnerability, you can follow these steps:

Update the Juice Shop application to the latest version
Apply the necessary patches and fixes
Review and update the application's code to prevent SQL Injection attacks
Regularly test and scan the application for vulnerabilities

A: The consequences of not fixing this vulnerability can be severe, including:

Unauthorized access to sensitive data
Modification of data
Complete control over the database
Financial loss and reputational damage

In conclusion, the Juice Shop application is vulnerable to a SQL Injection attack that allows an attacker to exfiltrate the entire DB schema definition. It is essential to address this vulnerability and ensure that the application is secure and protected from such attacks. By following best practices for secure coding, detecting and preventing SQL Injection attacks, and regularly testing and scanning the application for vulnerabilities, you can help prevent this type of attack and ensure the security of your web application.