Multiple buffer overflows in HP Tru64 UNIX 5.x allow local users to execute arbitrary code via (1) a long -contextDir argument to dtaction, (2) a long -p argument to dtprintinfo, (3) a long -customization argument to dxterm, or (4) a long DISPLAY environment variable to dtterm.
http://www.securityfocus.com/archive/1/290115
http://www.kb.cert.org/vuls/id/931579
http://www.kb.cert.org/vuls/id/836275
http://www.kb.cert.org/vuls/id/600699
http://www.kb.cert.org/vuls/id/202939
http://archives.neohapsis.com/archives/fulldisclosure/2002-q3/1203.html