system
Provide references for <CVE-2015-4391>.
user
Where can I find more information about <CVE-2015-4391>?
assistant
References are available at: http://www.securityfocus.com/bid/74351, http://www.openwall.com/lists/oss-security/2015/04/25/6, https://www.drupal.org/node/2467631, https://www.drupal.org/node/2467697, https://www.drupal.org/node/2467635.