This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--Vnf5vxBnCorio8WY34Zv56ksuT4qV57yb
Content-Type: multipart/mixed;
 boundary="eFoYIOtj645swCSugQPApA1FsdSs3IPmf";
 protected-headers="v1"
From: Thomas Deutschmann <whissi@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID: <177586f9-ca2b-d7aa-bf6c-6b0aacc9d45f@gentoo.org>
Subject: [ GLSA 202105-05 ] Mutt, NeoMutt: Denial of Service

--eFoYIOtj645swCSugQPApA1FsdSs3IPmf
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-U
Content-Transfer-Encoding: quoted-printable

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 202105-05
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Low
     Title: Mutt, NeoMutt: Denial of Service
      Date: May 26, 2021
      Bugs: #788388, #788391
        ID: 202105-05

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A vulnerability in Mutt and NeoMutt could lead to a Denial of Service
condition.

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             < 2.0.7                    >= 2.0.7
   2  mail-client/neomutt       < 20210205-r1           >= 20210205-r1
     -------------------------------------------------------------------
      2 affected packages

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

It was discovered that Mutt, and NeoMutt did not properly handle
certain situations where an IMAP sequence set ends with a comma.

Impact
======

A remote attacker could entice a user to connect to a malicious IMAP
server to cause a Denial of Service condition, or other unspecified
impacts.

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-2.0.7"

All NeoMutt users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot -v ">=mail-client/neomutt-20210205-r1"

References
==========

[ 1 ] CVE-2021-32055
       https://nvd.nist.gov/vuln/detail/CVE-2021-32055

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

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

  https://security.gentoo.org/glsa/202105-05

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


--eFoYIOtj645swCSugQPApA1FsdSs3IPmf--

--Vnf5vxBnCorio8WY34Zv56ksuT4qV57yb
Content-Type: application/pgp-signature; name="OpenPGP_signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="OpenPGP_signature"

-----BEGIN PGP SIGNATURE-----

wsB5BAABCAAjFiEEExKRzo+LDXJgXHuURObr3Jv2BVkFAmCuABsFAwAAAAAACgkQRObr3Jv2BVlF
vwf8DfvKIbZ/zJFUci5JAoQVjANJK60zlaKd5PDm6Pq9gwRIYg5I+rJtOyNEQFAOuqi+qh4reIsv
VdXw0RmrD9m7fKdLciZxCDDvWB3VWQVCc6A5zwx+LjM24cQ88zqijwFoh3cdSqv+cF043yRxzqlA
wadnZTtfwB2uE8JFDL9kY2tGZXUvihTd0mSmi2JXwpA+snxYHqrg7FcK8T/R+MRXodFXtzFC7Twg
Fc0uH2eqfnyJgNXikaPY8qeNRapLeqQ1rIHqRu+nTATJis58eA9e/3jFIAY3rxqGKSBFzdk3qLwF
HjLHCHIltah291UqHnu6roUgMG6fTIdNw+49a62DGg==
=3NQa
-----END PGP SIGNATURE-----

--Vnf5vxBnCorio8WY34Zv56ksuT4qV57yb--