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USN-3556-1: Dovecot vulnerability

1 February 2018

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



  • dovecot - IMAP and POP3 email server


It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to cause a denial of service.

Update instructions

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

Ubuntu 17.10
Ubuntu 16.04
Ubuntu 14.04

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


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