Secure Internet Live Conferencing (SILC) Server before 1.1.1 allows remote attackers to cause a denial of service (daemon crash) via a NEW_CLIENT packet without a nickname.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41307
http://www.vupen.com/english/advisories/2008/0919/references
http://www.securitytracker.com/id?1019711
http://www.securityfocus.com/bid/28450
http://silcnet.org/docs/release/SILC%20Server%201.1.1
http://security.gentoo.org/glsa/glsa-200804-27.xml