1. Ubuntu Security Notices
  2. USN-3928-1

USN-3928-1: Dovecot vulnerability

Publication date

1 April 2019

Overview

Dovecot could be made to crash or run programs as an administrator if it opened a specially crafted file.

Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

It was discovered that Dovecot incorrectly handled reading certain headers
from the index. A local attacker could possibly use this issue to escalate
privileges.

It was discovered that Dovecot incorrectly handled reading certain headers
from the index. A local attacker could possibly use this issue to escalate
privileges.

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
18.10 cosmic dovecot-core –  1:2.3.2.1-1ubuntu3.2
18.04 bionic dovecot-core –  1:2.2.33.2-1ubuntu4.3
16.04 xenial dovecot-core –  1:2.2.22-1ubuntu2.10
14.04 trusty dovecot-core –  1:2.2.9-1ubuntu2.6

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›