The password generation in mailman before 2.1.5 generates only 5 million unique passwords, which makes it easier for remote attackers to guess passwords via a brute force attack.Referenceshttp://marc.info/?l=bugtraq&m=110549296126351&w=2https://exchange.xforce.ibmcloud.com/vulnerabilities/18857http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=286796http://www.novell.com/linux/security/advisories/2005_07_mailman.htmlhttp://secunia.com/advisories/13603/