nslcd/pam.c in the nss-pam-ldapd 0.8.0 PAM module returns a success code when a user is not found in LDAP, which allows remote attackers to bypass authentication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/66028
http://www.securityfocus.com/bid/46819
http://securityreason.com/securityalert/8132
http://lists.arthurdejong.org/nss-pam-ldapd-announce/2011/msg00000.html
http://lists.arthurdejong.org/nss-pam-ldapd-announce/2011/attachments/txtVf3rHgt8qQ.txt