Buffer overflow in the (1) smap/smapd and (2) CSMAP daemons for Gauntlet Firewall 5.0 through 6.0 allows remote attackers to execute arbitrary code via a crafted mail message.
https://exchange.xforce.ibmcloud.com/vulnerabilities/7088
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-1436
http://www.securityfocus.com/bid/3290