Provide references for CVE-2013-6840.
Where can I find more information about CVE-2013-6840?
References are available at: http://www.securityfocus.com/bid/64153, http://secunia.com/advisories/56010, https://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-568732.pdf.