Secunia Security Advisory – Debian has issued an update for silc-client and silc-toolkit. This fixes some vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/81056/sa36614.txt
Source: https://packetstormsecurity.com/files/81056/Secunia-Security-Advisory-36614.html

