CWE-1022
Use of Web Link to Untrusted Target with window.opener Access
The web application produces links to untrusted external sites outside of its sphere of control, but it does not properly prevent the external site from modifying security-critical properties of the window.opener object, such as the location property.
Mitigation
Phase: Architecture and Design
Description:
- Specify in the design that any linked external document must not be granted access to the location object of the calling page.
Mitigation
Phase: Implementation
Description:
- When creating a link to an external document using the <a> tag with a defined target, for example "_blank" or a named frame, provide the rel attribute with a value "noopener noreferrer".
- If opening the external document in a new window via javascript, then reset the opener by setting it equal to null.
Mitigation
Phase: Implementation
Description:
- Do not use "_blank" targets. However, this can affect the usability of the application.
No CAPEC attack patterns related to this CWE.