The IPXPING_COMMAND in contrib/check_ipxping.c in Nagios Plugins 1.4.16 allows local users to gain privileges via a symlink attack on /tmp/ipxping/ipxping.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-4120
https://bugzilla.redhat.com/show_bug.cgi?id=957482
http://tracker.nagios.org/view.php?id=451