A Mutt security update has been released for Ubuntu Linux 23.10.

[USN-6374-2] Mutt vulnerabilities

==========================================================================
Ubuntu Security Notice USN-6374-2
October 19, 2023

mutt vulnerabilities
==========================================================================

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

- Ubuntu 23.10

Summary:

Mutt could be made to crash if it received specially crafted
input.

Software Description:
- mutt: text-based mailreader supporting MIME, GPG, PGP and threading

Details:

USN-6374-1 fixed vulnerabilities in Mutt. This update provides the
corresponding updates for Ubuntu 23.10.

Original advisory details:

 It was discovered that Mutt incorrectly handled certain email header
 contents. If a user were tricked into opening a specially crafted message,
 a remote attacker could possibly use this issue to cause a denial of
 service. (CVE-2023-4874, CVE-2023-4875)

Update instructions:

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

Ubuntu 23.10:
  mutt                            2.2.9-1ubuntu0.23.10.1

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

References:
  https://ubuntu.com/security/notices/USN-6374-2
  https://ubuntu.com/security/notices/USN-6374-1
  CVE-2023-4874, CVE-2023-4875

Package Information:
  https://launchpad.net/ubuntu/+source/mutt/2.2.9-1ubuntu0.23.10.1