Secunia Security Advisory – rPath has issued an update for Dovecot. This fixes a vulnerability, which can be exploited by malicious users to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/52635/sa23172.txt
Source: https://packetstormsecurity.com/files/52635/Secunia-Security-Advisory-23172.html

