Format string vulnerability in TrACESroute 6.0 GOLD (aka NANOG traceroute) allows local users to execute arbitrary code via the -T (terminator) command line argument.
http://www.novell.com/linux/security/advisories/2000_041_traceroute_txt.html
http://www.iss.net/security_center/static/9291.php
http://marc.info/?l=bugtraq&m=102753136231920&w=2
http://marc.info/?l=bugtraq&m=102737546927749&w=2
http://archives.neohapsis.com/archives/bugtraq/2002-07/0254.html
http://archives.neohapsis.com/archives/bugtraq/2002-06/0040.html