Buffer overflow in the POP3 server in 1st Class Mail Server 4.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an APOP USER command with a long second parameter (digest).Referenceshttp://www.osvdb.org/4129http://securitytracker.com/id?1009279https://exchange.xforce.ibmcloud.com/vulnerabilities/15314http://www.digiti.be/jeffosz/advisories/1stclasspop3.txthttp://www.securityfocus.com/bid/9794http://secunia.com/advisories/11029http://www.zone-h.org/advisories/read/id=4047
