CVE-2026-34734 HDF5 h5dump堆释放后重用漏洞

import os import subprocess # Proof of Concept for CVE-2026-34734 # This script demonstrates the scenario where a malicious file is processed. # Note: The specific binary pattern to trigger the UAF requires deep knowledge # of the HDF5 file structure and is not included here for safety. def create_malicious_h5(filename): # In a real exploit, this function would craft specific bytes # to trigger the UAF in H5T__conv_struct. with open(filename, 'wb') as f: # Placeholder for the malicious HDF5 file header and data blocks f.write(b'\x89HDF\r\n\x1a\n') # Malicious data would follow here pass print(f"[+] Created malicious file: {filename}") def trigger_vulnerability(filename): try: print(f"[*] Attempting to run h5dump on {filename}...") # This simulates the victim running the utility result = subprocess.run(['h5dump', filename], capture_output=True, text=True) print(result.stdout) print(result.stderr) except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": file_path = "exploit_cve_2026_34734.h5" create_malicious_h5(file_path) trigger_vulnerability(file_path)