Provide references for CVE-2015-7943.
Where can I find more information about CVE-2015-7943?
References are available at: https://www.drupal.org/node/2598434, http://www.securityfocus.com/bid/77293, https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2015-10-21/drupal-core-overlay-less-critical, https://www.drupal.org/node/2598426, http://www.debian.org/security/2017/dsa-3897.