Buffer overflow in CDE libDtHelp library allows local users to execute arbitrary code via (1) a modified DTHELPUSERSEARCHPATH environment variable and the Help feature, (2) DTSEARCHPATH, or (3) LOGNAME.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5141
http://www.securityfocus.com/bid/8973
http://www.kb.cert.org/vuls/id/575804
http://www.idefense.com/application/poi/display?id=134&type=vulnerabilities&flashstatus=false
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57414