HP Security Bulletin – A potential security vulnerability has been identified with the HP Tru64 UNIX Operating System running the dop command. The vulnerability could be exploited by a local, authorized user to execute arbitrary code with the privileges of the root user.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56601/SSRT071326.txt
Source: https://packetstormsecurity.com/files/56601/HP-Security-Bulletin-2007-13.26.html