Secunia Security Advisory – Red Hat has issued an update for tcltk. This fixes some vulnerabilities, which can be exploited by malicious users to cause a DoS (Denial of Service) and potentially by malicious people to compromise an application using the library.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/63934/sa29070.txt
Source: https://packetstormsecurity.com/files/63934/Secunia-Security-Advisory-29070.html