Untrusted search path vulnerability in (1) WSAdminServer and (2) WSWebServer in Kerio WebSTAR (4D WebSTAR Server Suite) 5.4.2 and earlier allows local users with webstar privileges to gain root privileges via a malicious libucache.dylib helper library in the current working directory.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30308
http://www.vupen.com/english/advisories/2006/4539
http://www.securityfocus.com/archive/1/451832/100/200/threaded