Djvirus

**Name of the Vulnerable Software and Affected Versions** Dovecot versions prior to 2.4.3-1.1 **Description** A mail message with a large number of RFC 2231 MIME parameters can cause excessive CPU usage in LMTP. A specially crafted message can lead to significant CPU time consumption during mail delivery. No publicly available exploits are known. **Recommendations** Upgrade to version 2.4.3-1.1 or later. Limit RFC 2231 MIME parameters in mail messages using MTA capabilities.