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  • [gentoo-announce] [ GLSA 202405-24 ] ytnef: Multiple Vulnerabilities

    From [email protected]@21:1/5 to All on Wed May 8 10:20:01 2024
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    Gentoo Linux Security Advisory GLSA 202405-24
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    https://security.gentoo.org/
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    Severity: Normal
    Title: ytnef: Multiple Vulnerabilities
    Date: May 08, 2024
    Bugs: #774255
    ID: 202405-24

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    Synopsis
    ========

    Multiple vulnerabilities have been discovered in ytnef, the worst of
    which could potentially lead to remote code execution.

    Background
    ==========

    ytnef is a TNEF stream reader for reading winmail.dat files.

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

    Package Vulnerable Unaffected
    -------------- ------------ ------------
    net-mail/ytnef < 2.0 >= 2.0

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

    The TNEFSubjectHandler function in lib/ytnef.c allows remote attackers
    to cause a denial-of-service (and potentially code execution) due to a
    double free which can be triggered via a crafted file.

    The SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.

    Impact
    ======

    Please review the referenced CVE identifiers for details.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All ytnef users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-mail/ytnef-2.0"

    References
    ==========

    [ 1 ] CVE-2021-3403
    https://nvd.nist.gov/vuln/detail/CVE-2021-3403
    [ 2 ] CVE-2021-3404
    https://nvd.nist.gov/vuln/detail/CVE-2021-3404

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

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

    https://security.gentoo.org/glsa/202405-24

    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 [email protected] or alternatively, you may file a bug at https://bugs.gentoo.org.

    License
    =======

    Copyright 2024 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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