Secunia Security Advisory – Red Hat has issued an update for dovecot. This fixes a security issue, which can be exploited by malicious users to bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/74220/sa33624.txt
Source: https://packetstormsecurity.com/files/74220/Secunia-Security-Advisory-33624.html