USN-4110-3: Dovecot regression
Dovecot regression
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
USN-4110-1 introduced a regression in Dovecot.
Software Description
- dovecot – IMAP and POP3 email server
Details
USN-4110-1 fixed a vulnerability in Dovecot. The update introduced a
regression causing a wrong check. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly
handled certain data. An attacker could possibly use this issue
to cause a denial of service or execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.04
- dovecot-core – 1:2.3.4.1-1ubuntu2.4
- Ubuntu 18.04 LTS
- dovecot-core – 1:2.2.33.2-1ubuntu4.5
- Ubuntu 16.04 LTS
- dovecot-core – 1:2.2.22-1ubuntu2.12
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-4110-3: Dovecot regression
