Stack-based buffer overflow in Novell Client 4.91 SP4 and earlier allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a long username in the "forgotten password" dialog.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42359
http://www.vupen.com/english/advisories/2008/1503
http://www.securitytracker.com/id?1020020
http://www.securityfocus.com/bid/29109
http://www.securityfocus.com/archive/1/491814/100/0/threaded