1. Forum
  2. Usenet
  3. LINUX.GENTOO.ANNOUNCE

  • [gentoo-announce] [ GLSA 202101-17 ] Dnsmasq: Multiple vulnerabilities

    From Aaron Bauman@21:1/5 to All on Fri Jan 22 19:10:02 2021
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Gentoo Linux Security Advisory GLSA 202101-17
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    https://security.gentoo.org/
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Severity: Normal
    Title: Dnsmasq: Multiple vulnerabilities
    Date: January 22, 2021
    Bugs: #766126
    ID: 202101-17

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

    Synopsis
    ========

    Multiple vulnerabilities have been found in Dnsmasq, the worst of which
    may allow remote attackers to execute arbitrary code.

    Background
    ==========

    Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP
    server.

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

    -------------------------------------------------------------------
    Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
    1 net-dns/dnsmasq < 2.83 >= 2.83

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

    Multiple vulnerabilities have been discovered in Dnsmasq. Please review
    the references below for details.

    Impact
    ======

    An attacker, by sending specially crafted DNS replies, could possibly
    execute arbitrary code with the privileges of the process, perform a
    cache poisoning attack or cause a Denial of Service condition.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All Dnsmasq users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.83"

    References
    ==========

    [ 1 ] CVE-2020-25681
    https://nvd.nist.gov/vuln/detail/CVE-2020-25681
    [ 2 ] CVE-2020-25682
    https://nvd.nist.gov/vuln/detail/CVE-2020-25682
    [ 3 ] CVE-2020-25683
    https://nvd.nist.gov/vuln/detail/CVE-2020-25683
    [ 4 ] CVE-2020-25684
    https://nvd.nist.gov/vuln/detail/CVE-2020-25684
    [ 5 ] CVE-2020-25685
    https://nvd.nist.gov/vuln/detail/CVE-2020-25685
    [ 6 ] CVE-2020-25686
    https://nvd.nist.gov/vuln/detail/CVE-2020-25686
    [ 7 ] CVE-2020-25687
    https://nvd.nist.gov/vuln/detail/CVE-2020-25687

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

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

    https://security.gentoo.org/glsa/202101-17

    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


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

    iQEzBAABCAAdFiEEmv7M5qd5RX+UB+cwV6vTrTwY1fAFAmALEcgACgkQV6vTrTwY 1fBdtQgAmLibpM2a/3blG/TsEGPFb6bYlsQbcskZ7f8FNY/put/D8Dso7mVOuvHH NFJa9CFETL10SDM1W8BLIgbiBiTcM6VF+U/DWO9PBRjG1vhPg3nsEnaEDvCTf7ta UsdUWU5fvlrbP4cWbN2RJeKEpgKHwe6W711ugM6zvVPbG4fD9pAXmyV19GQZksei xeQrfLZwk3jHvGSdudLbDwXbF5MwdX641o86TRMyKMtz1XWUqHN2Ky7H/m2PUFO8 pnwk8UmZ3uXVVZr8qF4KBFnLsNLogCibDqtcC019wTV+8O3nV8woZvDTM5RR/GMd oVyQw2rASob+07OlDkKYklNVtmF3GQ==
    =UeRG
    -----END PGP SIGNATURE-----

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)