function doFatalSFTPError(sftp, msg, noDebug) {
  const err = new Error(msg);
  err.level = 'sftp-protocol';
  if (!noDebug && sftp._debug)
    sftp._debug(`SFTP: Inbound: ${msg}`);
  sftp.emit('error', err);
  sftp.destroy();
  return false;
}
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.