syscheck/seechanges.c in OSSEC 2.7 through 2.8.1 on NIX systems allows local users to execute arbitrary code as root.
https://github.com/ossec/ossec-hids/releases/tag/2.8.2
http://www.securityfocus.com/bid/75148
http://www.openwall.com/lists/oss-security/2015/06/11/1
http://packetstormsecurity.com/files/132281/OSSEC-2.8.1-Local-Root-Escalation.html