HP Security Bulletin – A potential security vulnerability has been identified with the HP Tru64 UNIX Operating System running the ps command. The ps command could be used to disclose information about a process’s arguments and environmental variables that might be exploited by a local, authorized user.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56475/SSRT061256.txt
Source: https://packetstormsecurity.com/files/56475/HP-Security-Bulletin-2006-12.56.html