USN-2147-1: Mutt vulnerability

13 March 2014

mutt vulnerability

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

  • Ubuntu 13.10
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS


The mutt mail client could be made to crash or run programs as your login if it opened a specially crafted email.

Software Description

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


Beatrice Torracca and Evgeni Golov discovered a buffer overflow in mutt while expanding addresses when parsing email headers. An attacker could specially craft an email to cause mutt to crash, resulting in a denial of service, or possibly execute arbitrary code with the privileges of the user invoking mutt.

Update instructions

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

Ubuntu 13.10
mutt - 1.5.21-6.4ubuntu1.1
mutt-patched - 1.5.21-6.4ubuntu1.1
Ubuntu 12.10
mutt - 1.5.21-6ubuntu0.1
mutt-patched - 1.5.21-6ubuntu0.1
Ubuntu 12.04 LTS
mutt - 1.5.21-5ubuntu2.1
mutt-patched - 1.5.21-5ubuntu2.1
Ubuntu 10.04 LTS
mutt - 1.5.20-7ubuntu1.2
mutt-patched - 1.5.20-7ubuntu1.2

To update your system, please follow these instructions:

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