CVE-2025-59225：Microsoft Office Excel释放后使用漏洞

# CVE-2025-59225 - Microsoft Office Excel Use After Free PoC # This is a conceptual PoC demonstrating the UAF vulnerability trigger # Note: Actual exploitation requires a specially crafted Excel file import struct import os def create_malicious_excel(): """ Create a minimal Excel file structure that may trigger UAF. The actual exploit requires deep knowledge of Excel's internal object lifecycle and memory management. """ # Excel files are essentially ZIP archives containing XML files # The vulnerability likely exists in how Excel handles certain # worksheet objects, embedded objects, or formula parsing # Placeholder for actual exploit file generation # Real PoC would involve crafting specific XML/BIFF structures # that cause Excel to free an object while still holding references excel_template = b'PK\x03\x04' # ZIP file signature excel_template += b'\x00' * 26 # ZIP header fields # In a real exploit, this would contain: # 1. A crafted workbook.xml with malicious references # 2. Embedded objects that trigger the UAF condition # 3. Shellcode or ROP chain payload return excel_template # Usage: # 1. Generate malicious Excel file # 2. Deliver via phishing email or social engineering # 3. Victim opens the file in Microsoft Excel # 4. UAF triggers, leading to code execution if __name__ == "__main__": payload = create_malicious_excel() print(f"[*] CVE-2025-59225 PoC generated ({len(payload)} bytes)") print("[*] Deliver to victim and wait for them to open in Excel")