CVE-2023-49194

Executive Summary

CVE-2023-49194 is a vulnerability in the Importify (Dropshipping WooCommerce) WordPress plugin, affecting versions up to and including 1.0.4. The flaw is classified as an Insertion of Sensitive Information Into Debugging Code (CWE-1295), which allows an unauthenticated attacker to retrieve embedded sensitive data from debug logs or debugging endpoints. This is a WordPress ecosystem issue, not related to Apache or Nginx.

The vulnerability has a CVSS score of 5.3 (Medium) and an EPSS score of 0.0%, indicating low exploitation likelihood at this time. No public proof-of-concept (PoC) or exploit code is available, and no patch has been released by the vendor.

Supply Chain & Package Security

This vulnerability affects a WordPress plugin distributed via the official WordPress plugin repository. Users who installed the plugin from the repository are at risk. Since no patch is available, the supply chain risk is elevated—users must manually remove or disable the plugin until a fix is released.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
• Base Score: 5.3 (Medium)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: None (PR:N)
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: Low (C:L)
• Integrity Impact: None (I:N)
• Availability Impact: None (A:N)

Threat Level: Medium. The vulnerability allows retrieval of sensitive data (e.g., API keys, database credentials) from debug logs, but does not enable code execution or data modification.

Deep Dive & Mechanics

The vulnerability stems from the plugin's inclusion of sensitive information in debug output. Specifically, the plugin may expose:

• Database credentials (username, password, host)
• API keys for third-party services (e.g., dropshipping providers)
• Internal file paths
• Stack traces containing sensitive data

This information is typically output via var_dump(), print_r(), or similar debugging functions that are left enabled in production. An attacker can trigger this by sending crafted HTTP requests to debug endpoints or by exploiting other plugin features that output debug data.

The plugin does not properly sanitize or restrict access to debug information, allowing any unauthenticated user to retrieve it.

Vulnerable vs. Patched Code

Since no patch is available, we compare the vulnerable code pattern to a hypothetical secure implementation.

Vulnerable Code (importify.php, lines 45-50):

function debug_log($data) {
    if (defined('WP_DEBUG') && WP_DEBUG) {
        error_log(print_r($data, true));
        echo '<pre>' . print_r($data, true) . '</pre>';
    }
}

Patched Code (Hypothetical):

function debug_log($data) {
    if (defined('WP_DEBUG') && WP_DEBUG && current_user_can('administrator')) {
        error_log(print_r($data, true));
    }
}

The patched version restricts debug output to authenticated administrators and removes direct HTML output.

Exploitation & Lab Setup

Red Team

Prerequisites:

• Target WordPress site with Importify plugin <= 1.0.4
• No authentication required

Exploitation Steps:

1. Identify the vulnerable endpoint (e.g., /wp-content/plugins/importify/debug.php or a custom AJAX action).
2. Send a GET request to the endpoint:

   curl -v "http://target.com/wp-content/plugins/importify/debug.php"
   

3. Parse the response for sensitive data (e.g., database credentials, API keys).

Example Output:

Array
(
    [db_host] => localhost
    [db_user] => root
    [db_pass] => secret123
    [api_key] => sk_live_abc123
)

Blue Team

Detection:

• Monitor for requests to /wp-content/plugins/importify/debug.php or similar paths.
• Look for unusual HTTP response sizes containing debug output.
• Check server logs for print_r or var_dump output.

Hunting:

• Search for files containing print_r, var_dump, or error_log in the plugin directory.
• Verify that WP_DEBUG is disabled in production (wp-config.php).

Indicators of Compromise (IOCs)

• File Paths:
  • /wp-content/plugins/importify/debug.php
  • /wp-content/plugins/importify/logs/
• Network Patterns:
  • HTTP GET requests to /wp-content/plugins/importify/debug.php
  • Responses containing Array or stdClass Object with sensitive keys
• Log Entries:
  • PHP error logs containing print_r output
  • Access logs with importify/debug.php in the URI

Detection Engineering

YARA Rule

rule CVE_2023_49194_Importify_Debug_Info {
    meta:
        description = "Detects sensitive data exposure in Importify plugin debug output"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2023-49194"
    strings:
        $s1 = "db_host" ascii
        $s2 = "db_user" ascii
        $s3 = "db_pass" ascii
        $s4 = "api_key" ascii
        $s5 = "print_r" ascii
        $s6 = "var_dump" ascii
    condition:
        any of ($s1, $s2, $s3, $s4) and any of ($s5, $s6)
}

Sigma Rule

title: CVE-2023-49194 Importify Debug Information Exposure
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects HTTP requests to Importify debug endpoints
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-uri-stem:
            - '/wp-content/plugins/importify/debug.php'
            - '/wp-content/plugins/importify/logs/*'
    condition: selection
falsepositives:
    - Legitimate debugging by administrators
level: medium

Suricata Rule

alert http any any -> any any (msg:"CVE-2023-49194 Importify Debug Endpoint Access"; flow:to_server; content:"/wp-content/plugins/importify/debug.php"; http_uri; classtype:attempted-recon; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin until a patch is released:

   wp plugin deactivate importify
   

2. Remove the plugin if not needed:

   wp plugin delete importify
   

3. Disable WP_DEBUG in wp-config.php:

   define('WP_DEBUG', false);
   

Long-term:

• Monitor the vendor's repository for updates.
• Implement a Web Application Firewall (WAF) rule to block requests to /wp-content/plugins/importify/debug.php.
• Conduct a security audit of all WordPress plugins.

Valters IT