detect-angular-trust-as-html-method.yaml

rules:
- id: detect-angular-trust-as-html-method
  message: >-
    The use of $sce.trustAsHtml can be dangerous if unsanitized user input flows through this API.
  metadata:
    cwe:
    - "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
    owasp:
    - A07:2017 - Cross-Site Scripting (XSS)
    - A03:2021 - Injection
    references:
    - https://docs.angularjs.org/api/ng/service/$sce#trustAsHtml
    - https://owasp.org/www-chapter-london/assets/slides/OWASPLondon20170727_AngularJS.pdf
    category: security
    technology:
    - angular
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: MEDIUM
    confidence: LOW
  languages:
  - javascript
  - typescript
  severity: WARNING
  patterns:
  - pattern-either:
    - pattern: |
        $SOURCE = $scope.$INPUT;
        $sce.trustAsHtml($SOURCE);
    - pattern: |
        $sce.trustAsHtml($scope.$INPUT);
  - pattern-inside: |
      app.controller(..., function($scope,$sce){
      ...
      });