1. Ubuntu Security Notices
  2. USN-3556-1

USN-3556-1: Dovecot vulnerability

Publication date

1 February 2018

Overview

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

Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

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

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

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.10 artful dovecot-core –  1:2.2.27-3ubuntu1.2
16.04 xenial dovecot-core –  1:2.2.22-1ubuntu2.6
14.04 trusty dovecot-core –  1:2.2.9-1ubuntu2.3

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References

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