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  • [ GLSA 202105-05 ] Mutt, NeoMutt: Denial of Service

    From Thomas Deutschmann@21:1/5 to All on Wed May 26 10:20:02 2021
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    Gentoo Linux Security Advisory GLSA 202105-05
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    https://security.gentoo.org/
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    Severity: Low
    Title: Mutt, NeoMutt: Denial of Service
    Date: May 26, 2021
    Bugs: #788388, #788391
    ID: 202105-05

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    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


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