      onHeader: (header) => {
        this._remoteVer = header.versions.software;
        if (header.greeting)
          this.emit('greeting', header.greeting);
      },
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.