Content Security Policy (CSP) Errors with Newired

Modified on Thu, 20 Jun at 1:33 PM

Troubleshooting Content Security Policy (CSP) Errors with Newired

Introduction

Content Security Policy (CSP) errors can occur when using Newired on certain target applications, such as Salesforce. These errors are typically caused by the target application's security settings, which may block scripts and resources from external sources, including Newired. This guide provides step-by-step instructions on how to troubleshoot and resolve these CSP errors to ensure a smooth experience with Newired.

Understanding Content Security Policy (CSP)

CSP is a security feature that helps prevent cross-site scripting (XSS) attacks, clickjacking, and other code injection attacks. It does this by allowing web administrators to control which resources can be loaded and executed on their site. If Newired scripts are not allowed by the CSP settings of the target application, you will encounter CSP errors.

Identifying the Problem

When a CSP error occurs, you may see messages similar to the following in the browser console:

Refused to load the script 'https://your-newired-script-url' because it violates the following Content Security Policy directive: "script-src 'self' 'unsafe-inline' 'unsafe-eval' 'strict-dynamic' 'nonce-...'

These messages indicate that the browser has blocked the Newired script because it is not permitted by the target application's CSP.

Steps to Resolve CSP Errors

1. Review the CSP Error Message:

- Open the browser's developer tools (usually by pressing `F12` or `Ctrl+Shift+I`).

- Navigate to the "Console" tab to view the CSP error messages.

- Identify which directives are blocking the Newired script.

2. Modify the CSP in Salesforce:

- Log in to your Salesforce account with administrator privileges.

- Go to `Setup`.

- In the Quick Find box, enter `CSP`, and select `CSP Trusted Sites`.

- Click `New Trusted Site`.

- Enter a name for the trusted site (e.g., "Newired").

- In the `Trusted Site URL` field, enter the URL of the Newired script (e.g., `https://your-newired-script-url`).

- Save the changes.

3. Update CSP Headers in Other Applications:

- If you are encountering CSP errors in applications other than Salesforce, you will need to update the CSP headers of the target application to allow Newired scripts.

- Add the Newired script URL to the `script-src` directive in your CSP header. For example:

Content-Security-Policy: script-src 'self' https://your-newired-script-url;

- If your CSP uses nonce-based or hash-based directives, ensure the Newired script is included appropriately.

4. Test the Configuration:

- After updating the CSP settings, refresh the target application to see if the CSP error persists.

- If the error is resolved, Newired should now function as expected.

Additional Considerations

- Security Implications:

- Modifying CSP settings can have security implications. Ensure that the changes are reviewed and approved by your security team.

- Only add trusted URLs to your CSP to minimize the risk of security vulnerabilities.

- Support:

- If you continue to experience issues after updating the CSP settings, please contact Newired support for further assistance.

- Provide detailed information about the error, including screenshots of the console messages and the steps you have taken to resolve the issue.

Conclusion

By following these steps, you should be able to resolve most CSP errors encountered when using Newired on target applications like Salesforce. Ensuring that the Newired scripts are allowed by the target application's CSP settings is crucial for a seamless integration and a smooth user experience.

Which CSP Directives Should Be Added for Newired?

When configuring Content Security Policy (CSP) settings to allow Newired, it's important to understand which directives need to be updated to ensure the smooth functioning of Newired scripts and resources. Below are the specific CSP directives that should be considered:

1. script-src: This directive controls which sources can be used for JavaScript. You need to add the URL of the Newired script to allow it to be executed.

2. style-src: This directive controls which sources can be used for CSS. If Newired uses external stylesheets, you need to add the URL of these stylesheets to this directive.

3. connect-src: This directive allows control over which URLs the application can connect to via XMLHttpRequest, WebSocket, and EventSource. This is important if Newired requires making network requests to its own servers.

4. img-src: This directive controls the sources from which images can be loaded. Add the URL of any image resources used by Newired.

5. frame-src: This directive controls which sources can be used within `<iframe>` elements. If Newired uses iframes, ensure these URLs are included.

Example CSP Configuration for Newired

Here's an example of how you might configure your CSP to include Newired resources:

Content-Security-Policy: 
    script-src 'self' https://your-newired-script-url;
    style-src 'self' https://your-newired-style-url;
    connect-src 'self' https://your-newired-api-url;
    img-src 'self' https://your-newired-image-url;
    frame-src 'self' https://your-newired-frame-url;

Steps to Add Directives in Salesforce

1. Add Trusted Sites in Salesforce:

- Log in to your Salesforce account with administrator privileges.

- Go to `Setup`.

- In the Quick Find box, enter `CSP`, and select `CSP Trusted Sites`.

- Click `New Trusted Site`.

- Enter a name for the trusted site (e.g., "Newired").

- In the `Trusted Site URL` field, enter the URL of the Newired script (e.g., `https://your-newired-script-url`).

- Save the changes.

2. Update Other CSP Headers:

- In the CSP settings of other target applications, update the headers to include the Newired URLs in the appropriate directives.

- Ensure you cover all directives that might be blocking Newired resources:

`script-src`, `style-src`, `connect-src`, `img-src`, and `frame-src`.

Example for Other Applications

If you are configuring CSP in an application other than Salesforce, you might add the following headers to your server configuration or HTML meta tag:

<meta http-equiv="Content-Security-Policy" content="
    script-src 'self' https://your-newired-script-url;
    style-src 'self' https://your-newired-style-url;
    connect-src 'self' https://your-newired-api-url;
    img-src 'self' https://your-newired-image-url;
    frame-src 'self' https://your-newired-frame-url;
">

By ensuring these directives are correctly set in your CSP configuration, you will allow Newired to function correctly within the target application while maintaining a secure environment. Always review these changes with your security team to ensure compliance with your organization's security policies.