Unknown vulnerability in login for AIX 5.1L, when using loadable authentication modules, allows remote attackers to gain access to the system.
https://exchange.xforce.ibmcloud.com/vulnerabilities/8269
http://www.securityfocus.com/bid/6839
http://www.kb.cert.org/vuls/id/249491
http://www-1.ibm.com/support/search.wss?rs=0&q=IY26302&apar=only