CVE-2015-3238
The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password.
Date published : 2015-08-24
http://www.securityfocus.com/bid/75428
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html