[USN-4110-3] Dovecot regression

Leonidas S. Barbosa leo.barbosa at canonical.com
Wed Aug 28 20:40:38 UTC 2019

Ubuntu Security Notice USN-4110-3
August 28, 2019

Dovecot regression

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


USN-4110-1 introduced a regression in Dovecot.

Software Description:
- dovecot: IMAP and POP3 email server


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:

Ubuntu 18.04 LTS:
  dovecot-core                    1:

Ubuntu 16.04 LTS:
  dovecot-core                    1:2.2.22-1ubuntu2.12

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


Package Information:
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