CVE-2026-32200 Microsoft Office PowerPoint释放后利用漏洞

import sys # Proof of Concept for CVE-2026-32200 (Use After Free in PowerPoint) # This script demonstrates the logic of creating a malformed file structure # that triggers the UAF vulnerability. Actual exploit bytes are omitted for safety. def generate_malicious_pptx(): # 1. Create a standard PPTX structure (zipped XMLs) # 2. Modify slide XML to include a specific malformed object reference # 3. The object is freed (Object A) but a reference to it remains # 4. Reallocate memory with attacker-controlled data (Object B) # 5. Trigger the use of the dangling pointer to Object A (now pointing to B) print("[*] Parsing PPTX structure...") # Simulating the vulnerability trigger vulnerable_object = allocate_object("slide_layout") print("[*] Freeing object...") deallocate_object(vulnerable_object) # Step 1: Free print("[*] Reallocating memory with payload...") # Step 2: Reallocate/Heap Spray to occupy the freed memory payload = create_shellcode() reallocate_memory(payload) print("[*] Triggering use-after-free...") # Step 3: PowerPoint tries to access the freed object trigger_use(vulnerable_object) print("[+] Exploit triggered! Code execution logic initiated.") # Helper functions for demonstration def allocate_object(name): return f"Obj_{name}" def deallocate_object(obj): pass def create_shellcode(): return b"\x90\x90..." # NOP sled + shellcode def reallocate_memory(data): pass def trigger_use(obj): pass if __name__ == "__main__": generate_malicious_pptx()