Buffer overflow in lib/silcclient/client_notify.c of SILC Client and SILC Toolkit before 1.1.2 allows remote attackers to cause a denial of service via "NICK_CHANGE" notifications.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35281
http://www.vupen.com/english/advisories/2007/2454
http://www.silcnet.org/docs/release/SILC%20Toolkit%201.1.2
http://www.securityfocus.com/bid/24795
http://silcnet.org/docs/changelog/changes.txt