Kerberos FTP client allows remote FTP sites to execute arbitrary code via a pipe (|) character in a filename that is retrieved by the client.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2003-0040
http://www.redhat.com/support/errata/RHSA-2003-020.html
http://www.mandriva.com/security/advisories?name=MDKSA-2003:021
http://secunia.com/advisories/8114
http://secunia.com/advisories/7979
http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0047.html