Cyrus IMAPD Pre-Login Heap Corruption Vulnerability Solution:
Debian has released an advisory (DSA 215-1) which contains fixes. Information about obtaining and applying these fixes can be found in the attached advisory.
Fixes are available:
Carnegie Mellon University Cyrus IMAP Server 1.5.19
Carnegie Mellon University Cyrus IMAP Server 2.0.12
Carnegie Mellon University Cyrus IMAP Server 2.0.16
Carnegie Mellon University Cyrus IMAP Server 2.1.9