lquerypv in AIX 4.1 and 4.2 allows local users to read arbitrary files by specifying the file in the -h command line parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/1752
http://www.securityfocus.com/bid/455
http://marc.info/?l=bugtraq&w=2&r=1&s=lquerypv&q=b
http://marc.info/?l=bugtraq&m=87602167420196&w=2