Provide references for CVE-2013-6858.
Where can I find more information about CVE-2013-6858?
References are available at: http://www.securityfocus.com/bid/63787, http://www.ubuntu.com/usn/USN-2062-1, https://bugs.launchpad.net/horizon/+bug/1247675, http://secunia.com/advisories/55770, http://lists.opensuse.org/opensuse-updates/2015-01/msg00040.html, http://secunia.com/advisories/56117.