USN-3951-1: Dovecot vulnerability

23 April 2019

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

Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

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
Ubuntu 18.10

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

References