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  • [ GLSA 202012-18 ] PowerDNS: information disclosure

    From Thomas Deutschmann@21:1/5 to All on Wed Dec 23 21:40:02 2020
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    Gentoo Linux Security Advisory GLSA 202012-18
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    https://security.gentoo.org/
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    Severity: Low
    Title: PowerDNS: information disclosure
    Date: December 23, 2020
    Bugs: #744160
    ID: 202012-18

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    Synopsis
    ========

    An information disclosure vulnerability in PowerDNS allow remote
    attackers to obtain sensitive information.

    Background
    ==========

    The PowerDNS nameserver is an authoritative-only nameserver which uses
    a flexible backend architecture.

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

    -------------------------------------------------------------------
    Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
    1 net-dns/pdns < 4.3.1 >= 4.3.1

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

    It was discovered that PowerDNS did not properly handle certain unknown records.

    Impact
    ======

    An authorized attacker with the ability to insert crafted records into
    a zone might be able to leak the content of uninitialized memory.
    Crafted records cannot be inserted via AXFR.

    Workaround
    ==========

    Do not take zone data from untrusted users.

    Resolution
    ==========

    All PowerDNS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/pdns-4.3.1"

    References
    ==========

    [ 1 ] CVE-2020-17482
    https://nvd.nist.gov/vuln/detail/CVE-2020-17482
    [ 2 ] PowerDNS Security Advisory 2020-05

    https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-05.html

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

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

    https://security.gentoo.org/glsa/202012-18

    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 2020 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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