USN-4110-1: Dovecot vulnerability

USN-4110-1: Dovecot vulnerability

dovecot vulnerability

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

• Ubuntu 19.04
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS

Summary

Dovecot could be made to crash or execute arbitrary code if it
received a specially crafted data.

Software Description

• dovecot – IMAP and POP3 email server

Details

Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly
handled certain data. An attacker could possibly use this issue
to cause a denial of service or execute arbitrary code.

Update instructions

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

Ubuntu 19.04

dovecot-core – 1:2.3.4.1-1ubuntu2.3

Ubuntu 18.04 LTS

dovecot-core – 1:2.2.33.2-1ubuntu4.4

Ubuntu 16.04 LTS

dovecot-core – 1:2.2.22-1ubuntu2.11

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2019-11500

Source: USN-4110-1: Dovecot vulnerability