function makePEM(type, data) {
  data = data.base64Slice(0, data.length);
  let formatted = data.replace(/.{64}/g, '$&\n');
  if (data.length & 63)
    formatted += '\n';
  return `-----BEGIN ${type} KEY-----\n${formatted}-----END ${type} KEY-----`;
}
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.