USN-4403-1: Mutt vulnerability and regression

Releases

• Ubuntu 20.04 LTS
• Ubuntu 19.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 12.04

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

• mutt - 1.13.2-1ubuntu0.2

Ubuntu 19.10

• mutt - 1.10.1-2.1ubuntu0.2

Ubuntu 18.04

• mutt - 1.9.4-3ubuntu0.3

Ubuntu 16.04

• mutt - 1.5.24-1ubuntu0.4

Ubuntu 12.04

• mutt - 1.5.21-5ubuntu2.5

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

References

• CVE-2020-14954
• https://launchpad.net/bugs/1884588