Third party cookies must be blocked.

Associated with: CCI-000166

SV-57585r2_rule Third party cookies must be blocked.

Vulnerability discussion

Third party cookies are cookies which can be set by web page elements that are not from the domain that is in the browser's address bar. Enabling this setting prevents cookies from being set by web page elements that are not from the domain that is in the browser's address bar. Disabling this setting allows cookies to be set by web page elements that are not from the domain that is in the browser's address bar and prevents users from changing this setting. If this policy is left not set, third party cookies will be enabled but the user will be able to change that.

Check content

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If BlockThirdPartyCookies is not displayed under the Policy Name column or it is not set to true under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the BlockThirdPartyCookies value name does not exist or its value data is not set to 1, then this is a finding.

Fix text

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Block third party cookies Policy State: Enabled Policy Value: N/A

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.