Apple Terminal 1.4.4 allows attackers to execute arbitrary commands via terminal escape sequences.
http://www.vupen.com/english/advisories/2005/0455
http://www.securityfocus.com/bid/13480
http://www.kb.cert.org/vuls/id/994510
http://securitytracker.com/id?1013882
http://secunia.com/advisories/15227
http://lists.apple.com/archives/security-announce/2005/May/msg00001.html