Nagios NDOUtils before 2.1.4 allows privilege escalation from nagios to root because certain executable files are owned by the nagios user.
https://github.com/NagiosEnterprises/ndoutils/pull/65
https://github.com/NagiosEnterprises/ndoutils/compare/ndoutils-2.1.3...ndoutils-2.1.4
https://github.com/NagiosEnterprises/ndoutils/commit/18ef12037f4a68772d6840cbaa08aa2da07d2891