Buffer overflow in TT_SESSION environment variable in ToolTalk shared library allows local users to gain root privileges.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4374
http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX9909-103
http://www.securityfocus.com/bid/641
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/192