Buffer overflow in ftpd in IBM AIX 5.3 and earlier allows remote attackers to execute arbitrary code via a long NLST command.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11697
http://www.ibm.com/support/docview.wss?uid=isg1IZ83276
http://www.ibm.com/support/docview.wss?uid=isg1IZ83275
http://www.ibm.com/support/docview.wss?uid=isg1IZ83274
http://www.ibm.com/support/docview.wss?uid=isg1IZ83252
http://securitytracker.com/id?1024368
http://seclists.org/fulldisclosure/2010/Jul/337
http://aix.software.ibm.com/aix/efixes/security/ftpd_advisory.asc