[USN-3951-1] Dovecot vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Tue Apr 23 13:07:59 UTC 2019

Ubuntu Security Notice USN-3951-1
April 23, 2019

dovecot vulnerability

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

- Ubuntu 19.04
- Ubuntu 18.10


Dovecot could be made to crash if it received specially crafted network

Software Description:
- dovecot: IMAP and POP3 email server


It was discovered that the Dovecot JSON encoder incorrectly handled certain
invalid UTF-8 characters. A remote attacker could possibly use this issue
to cause Dovecot to repeatedly crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 19.04:
  dovecot-core                    1:

Ubuntu 18.10:
  dovecot-core                    1:

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


Package Information:

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