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  • [gentoo-announce] [ GLSA 202209-10 ] Logcheck: Root privilege escalatio

    From glsamaker@gentoo.org@21:1/5 to All on Sun Sep 25 16:00:03 2022
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    Gentoo Linux Security Advisory GLSA 202209-10
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    https://security.gentoo.org/
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    Severity: Normal
    Title: Logcheck: Root privilege escalation
    Date: September 25, 2022
    Bugs: #630752
    ID: 202209-10

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    Synopsis
    ========

    A vulnerability has been discovered in Logcheck's ebuilds which could
    allow for root privilege escalation.

    Background
    ==========

    Logcheck mails anomalies in the system logfiles to the administrator.

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

    -------------------------------------------------------------------
    Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
    1 app-admin/logcheck <= 1.3.23 Vulnerable!

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

    The pkg_postinst phase of the Logcheck ebuilds recursively chown the /etc/logcheck and /var/lib/logcheck directories. If the logcheck adds
    hardlinks to other files in these directories, the chown call will
    follow the link and transfer ownership of any file to the logcheck user.

    Impact
    ======

    A local attacker with access to the logcheck user could escalate to root privileges.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    Gentoo has discontinued support for Logcheck. We recommend that users
    remove it:

    # emerge --ask --depclean "app-admin/logcheck"

    References
    ==========

    [ 1 ] CVE-2017-20148
    https://nvd.nist.gov/vuln/detail/CVE-2017-20148

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

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

    https://security.gentoo.org/glsa/202209-10

    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 2022 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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