Red Hat Network (RHN) Satellite Server 5.4 does not use a time delay after a failed login attempt, which makes it easier for remote attackers to conduct brute force password guessing attacks.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65657
https://bugzilla.redhat.com/show_bug.cgi?id=672159
http://www.vupen.com/english/advisories/2011/0491
http://www.securitytracker.com/id?1025116
http://www.securityfocus.com/bid/46528