zabbix_agentd 1.1.4 in ZABBIX before 1.4.3 runs "UserParameter" scripts with gid 0, which might allow local users to gain privileges.
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00232.html
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00196.html
http://www.zabbix.com/forum/showthread.php?t=8400
http://www.securityfocus.com/bid/26680
http://www.debian.org/security/2007/dsa-1420
http://secunia.com/advisories/27978
http://secunia.com/advisories/27948