To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 202101-32 ] Mutt, NeoMutt: Information disclosure

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Gentoo Linux Security Advisory                           GLSA 202101-32
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Mutt, NeoMutt: Information disclosure
     Date: January 26, 2021
     Bugs: #755833, #755866
       ID: 202101-32

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Synopsis
========

A weakness was discovered in Mutt and NeoMutt's TLS handshake handling

Background
==========

Mutt is a small but very powerful text-based mail client.

NeoMutt is a command line mail reader (or MUA). It’s a fork of Mutt
with added features.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  mail-client/mutt             < 2.0.2                    >= 2.0.2
  2  mail-client/neomutt         < 20201120               >= 20201120
    -------------------------------------------------------------------
     2 affected packages

Description
===========

A weakness in TLS handshake handling was found which may allow
information disclosure.

Impact
======

A remote attacker may be able to cause information disclosure.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Mutt users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=mail-client/mutt-2.0.2"

All NeoMutt users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=mail-client/neomutt-20201120"

References
==========

[ 1 ] CVE-2020-28896
      https://nvd.nist.gov/vuln/detail/CVE-2020-28896

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202101-32

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5