USN-3556-1: Dovecot vulnerability

Ubuntu Security Notice USN-3556-1

1st February, 2018

dovecot vulnerability

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

• Ubuntu 17.10



• Ubuntu 16.04 LTS



• Ubuntu 14.04 LTS

Summary

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

Software description

• 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.

Update instructions

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

Ubuntu 17.10:

Ubuntu 16.04 LTS:

Ubuntu 14.04 LTS:

To update your system, please follow these instructions: