  ping() {
    const p = this._packetRW.write.allocStart;
    const packet = this._packetRW.write.alloc(PING_PAYLOAD.length);

    packet.set(PING_PAYLOAD, p);

    this._debug && this._debug(
      'Outbound: Sending ping (GLOBAL_REQUEST: keepalive@openssh.com)'
    );
    sendPacket(this, this._packetRW.write.finalize(packet));
  }
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.