USN-4403-1: Mutt vulnerability and regression

Publication date

24 June 2020

Overview

Mutt could be made to enable MITM attacks if it received a specially crafted request.


Packages

  • mutt - text-based mailreader supporting MIME, GPG, PGP and threading

Details

It was discovered that Mutt incorrectly handled certain requests.
An attacker could possibly use this issue to enable MITM attacks.
(CVE-2020-14954)

This update also address a regression caused in the last update USN-4401-1.
It only affected Ubuntu 12.04 ESM, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 19.10.

It was discovered that Mutt incorrectly handled certain requests.
An attacker could possibly use this issue to enable MITM attacks.
(CVE-2020-14954)

This update also address a regression caused in the last update USN-4401-1.
It only affected Ubuntu 12.04 ESM, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 19.10.

Update instructions

After a standard system update you need to restart mutt to 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
20.04 focal mutt –  1.13.2-1ubuntu0.2
19.10 eoan mutt –  1.10.1-2.1ubuntu0.2
18.04 bionic mutt –  1.9.4-3ubuntu0.3
16.04 xenial mutt –  1.5.24-1ubuntu0.4
12.04 precise mutt –  1.5.21-5ubuntu2.5

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