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USN-5509-1: Dovecot vulnerability

11 July 2022

Dovecot could allow unintended access to network services.



  • dovecot - IMAP and POP3 email server


Julian Brook discovered that Dovecot incorrectly handled multiple passdb
configuration entries. In certain configurations, a remote attacker could
possibly use this issue to escalate privileges.

Update instructions

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

Ubuntu 22.04
Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04

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