Provide references for CVE-2011-4130.
Where can I find more information about CVE-2011-4130?
References are available at: http://bugs.proftpd.org/show_bug.cgi?id=3711, http://www.zerodayinitiative.com/advisories/ZDI-11-328/, http://www.proftpd.org/docs/NEWS-1.3.3g, http://www.securityfocus.com/bid/50631.