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Technical information leak - Angular

Description​

Get technical information about the system, such as:

  • Angular version (ng-version).

Impact​

Display technical information of the system.

Recommendation​

Disable functionalities that give information about the components used such as names and versions.

Threat​

Anonymous attacker from the Internet.

Expected Remediation Time​

⌚ 30 minutes.

Score​

Default score using CVSS 3.1. It may change depending on the context of the vulnerability.

Base​

  • Attack vector: N
  • Attack complexity: H
  • Privileges required: N
  • User interaction: N
  • Scope: U
  • Confidentiality: L
  • Integrity: N
  • Availability: N

Temporal​

  • Exploit code madurity: U
  • Remediation level: X
  • Report confidence: X

Result​

  • Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:X/RC:X
  • Score:
    • Base: 3.7
    • Temporal: 3.4
  • Severity:
    • Base: Low
    • Temporal: Low

Code Examples​

Compliant code​

No functionalities that show technical information about the system

@Component({
    selector: '[data-app]',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.scss']
})
export class AppComponent {
    constructor(private _elementRef: ElementRef) {
    }

    ngOnInit(): void {
        this._elementRef.nativeElement.removeAttribute("ng-version");
    }
}

Non compliant code​

There is information in the code that displays the ng-version of the system

<app-root _nghost-iie-c28="" ng-version="11.0.4"><router-outlet _ngcontent-iie-c28="">

Requirements​

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