USN-4403-1: Mutt vulnerability and regression

24 June 2020

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

Releases

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.

Update instructions

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

Ubuntu 20.04
Ubuntu 19.10
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 12.04

After a standard system update you need to restart mutt to make
all the necessary changes.