FreeIPA 4.0.x before 4.0.5 and 4.1.x before 4.1.1, when 2FA is enabled, allows remote attackers to bypass the password requirement of the two-factor authentication leveraging an enabled OTP token, which triggers an anonymous bind.
https://www.redhat.com/archives/freeipa-users/2014-November/msg00077.html
https://www.redhat.com/archives/freeipa-devel/2014-November/msg00068.html
https://fedorahosted.org/freeipa/ticket/4690
https://exchange.xforce.ibmcloud.com/vulnerabilities/98500
https://bugzilla.redhat.com/show_bug.cgi?id=1160871
http://www.securityfocus.com/bid/70932
http://www.freeipa.org/page/Releases/4.1.1
http://lists.fedoraproject.org/pipermail/package-announce/2014-November/143000.html