Provide references for CVE-2012-5356.
Where can I find more information about CVE-2012-5356?
References are available at: http://www.ubuntu.com/usn/USN-1588-1, http://www.securityfocus.com/bid/55736, https://exchange.xforce.ibmcloud.com/vulnerabilities/78990, https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1016643.