Multiple directory traversal vulnerabilities in AIX 5.3 ML03 allow local users to determine the existence of files and read partial contents of certain files via a .. (dot dot) in the argument to (1) getCommand.new (aka getCommand) and (2) getShell, a different vulnerability than CVE-2005-4273.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-0141
http://www.securityfocus.com/bid/16103
http://www.securityfocus.com/bid/16102
http://www.securityfocus.com/archive/1/420589/100/0/threaded