The policy against eval() and its relatives like setTimeout(String), setInterval(String), and new Function(String) can be relaxed by adding 'unsafe-eval' to your policy: "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'" However, we strongly recommend against doing this. These functions are notorious XSS attack vectors. This example restricts resources to be loaded only from For a detailed list of examples and references, visit Once you have determined how you would like to configure your CSP security, it is time to test it to ensure it works as expected. If there are violations, click the Headers tab in the results pane and scroll to the bottom to view © 2003-2020 Tableau Software LLC. Tableau Server supports the Content Security Policy (CSP) standard.

Content-Security-Policy: script-src 'nonce-uG2bsk6JIH923nsvp01n24KE' Regenerating the nonce for every page load can be troublesome, so another approach is to use a cryptographic hash of the permitted code itself. This is the simplest option, but it will allow all inline snippets to run, meaning code you want to … CSP14306: No sources given for directive 'script-src' for Content-Security-Policy - this is equivalent to using 'none' and will prevent the downloading of all resources of this type. CSP is intended to be an additional layer of security against cross-site scripting and other malicious web-based attacks. You must include the After you have configured directives, enable CSP on Tableau Server.The following options are used to enable enforcement or report only mode for the directives you have set.Adds a CSP header to all requests so that any violation will be enforced by the browser.To enable enforcement of the CSP directives that you've specified, run the following commandIf the pending changes require a server restart, the To view CSP violations for a given viz, load the viz in a browser that includes developer tools. Description.

The default-src directive set to https: will allow the browser to load resource from any origin using https://.

However, in the event that the CSP does trigger an unwanted action, the The report in this case will look something like this:Now that you have reporting configured, you will be able to keep a closer eye on which sources are violating your Content Security Policy. These form the core of Content Security Policy; other directives are defined in a modular fashion in ancillary documents (see §6.5 Directives Defined in Other Documents for examples). If there are no violations then the search will not return any CSP reports.

This CSP allows for any resource to be loaded from the current domain as well as any sub domain of example.com (both HTTP and HTTPS). Having a CSP in place is an easy way to further increase the security of your website and thus help keep your visitors safe from any harmful malicious attacks.Try KeyCDN with a free 14 day trial, no credit card required.KeyCDN uses cookies to make its website easier to use. CSP security is backwards compatible meaning that older browsers are still able to to view the webpages that CSP-enabled web server deliver, and vice-versa.There are multiple directives available to website owners who want to implement a content security policy. The following section outlines a few example policies.As seen by the CSP directives outlined above, there are many options available for configuring a Content Security Policy on your web server. An inline script (target uri) was blocked due to the directive 'script-src ms-appx: data: 'unsafe-eval' in the 'host defined' policy. This example uses the Chrome browser.Load a test viz with violations that is hosted on the Tableau Server deployment where you configured CSP. All resources without a directive set are allowed to be loaded only from the same origin, in this case “blog.compass-security.com”. Remove inline script and place it in an external file. The directive “default-src” is set to ‘self’, which means same origin. Tableau Server includes the set of default directives in the table below.Serves as a fallback for the other fetch directives.Restricts the URLs which can be loaded using script interfaces.Specifies valid sources for fonts loaded using @font-face.Specifies valid sources for nested browsing contexts loading using elements such as and