CVE-2009-1384
pam_krb5 2.2.14 through 2.3.4, as used in Red Hat Enterprise Linux (RHEL) 5, generates different password prompts depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.
Date published : 2009-05-28
http://www.securityfocus.com/bid/35112
http://www.securityfocus.com/archive/1/516397/100/0/threaded