Provide references for CVE-2015-7880.
Where can I find more information about CVE-2015-7880?
References are available at: https://www.drupal.org/node/2582015, http://www.securityfocus.com/bid/77023, http://www.openwall.com/lists/oss-security/2015/10/21/2, https://www.drupal.org/node/2582283.