USN-1143-1: Dovecot vulnerability

02 June 2011

An attacker could send a crafted email message that could disrupt email service.



  • dovecot - IMAP and POP3 email server


It was discovered that the message header parser in Dovecot did not
properly handle '\0' characters in header names. This could allow a
remote attacker to cause a denial of service through a crafted email
message by crashing the Dovecot daemon or corrupting mailboxes.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

In general, a standard system update will make all the necessary changes.