What other choice do we have instead of using Angular's DomSanitizer for bypassing security and trusting HTML content?

Encountering XSS vulnerabilities while working with the IT security team during the build process. The (this.res) contains the code for embedding a video with script tags to play the video and its content. Any suggestions for an alternative solution are greatly appreciated.

Include

    import {
      Component,
      OnInit,
      ViewChild,
      SecurityContext,
    } from '@angular/core';
    
    import {DomSanitizer} from '@angular/platform-browser';

Incorporate the following code in your component:

 ngOnInit() {
  this.res = `<div class="embed-container">
    <iframe
      src="https://www.youtube.com/embed/{{ include.id }}"
      width="700"
      height="480"
      frameborder="0"
      allowfullscreen="true">
    </iframe>
  </div>`

  this._domSanitizer.bypassSecurityTrustHtml(this.res)
  }

I have attempted to use this._domSanitizer.bypassSecurityTrustHtml(this.res) to display the video and its content, but I am wondering if there is an API or any other alternative solution to address these XSS vulnerabilities?

javascriptcssangular

Answer №1

For more information, please take a look at https://angular.io/guide/security.

In this scenario, focusing on URL security rather than HTML security should suffice. It is recommended to transfer the HTML code to the template and create a new variable that securely stores the iframe src URL using bypassSecurityTrustUrl().

.ts:

ngOnInit() {
  this.src = this._domSanitizer.bypassSecurityTrustUrl(`https://www.youtube.com/embed/${id}`);
}

.html:

<div class="embed-container">
  <iframe
      [src]="src"
      width="700"
      height="480"
      frameborder="0"
      allowfullscreen="true">
  </iframe>
</div>

This approach helps prevent potential attacks involving malicious HTML injection.

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