Ubuntu Update for dovecot vulnerability USN-567-1

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-567-1
Solution
Please Install the Updated Packages.
Insight
It was discovered that in very rare configurations using LDAP, Dovecot may reuse cached connections for users with the same password. As a result, a user may be able to login as another if the connection is reused. The default Ubuntu configuration of Dovecot was not vulnerable.
Affected
dovecot vulnerability on Ubuntu 7.04 , Ubuntu 7.10
References