lspath in AIX 5.2, 5.3, and possibly earlier versions, does not drop privileges before processing the -f option, which allows local users to read one line of arbitrary files.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19281
http://www.securityfocus.com/bid/12513
http://www.idefense.com/application/poi/display?id=195&type=vulnerabilities
http://www-1.ibm.com/support/search.wss?rs=0&q=IY67655&apar=only
http://www-1.ibm.com/support/search.wss?rs=0&q=IY67457&apar=only