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    Gentoo: GLSA-202009-12: ZeroMQ: Denial of service

    Date
    159
    Posted By
    A vulnerability in ZeroMQ could lead to a Denial of Service condition.
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    Gentoo Linux Security Advisory                           GLSA 202009-12
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                                               https://security.gentoo.org/
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     Severity: Normal
        Title: ZeroMQ: Denial of service
         Date: September 13, 2020
         Bugs: #740574
           ID: 202009-12
    
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    Synopsis
    ========
    
    A vulnerability in ZeroMQ could lead to a Denial of Service condition.
    
    Background
    ==========
    
    Looks like an embeddable networking library but acts like a concurrency
    framework.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package              /     Vulnerable     /            Unaffected
        -------------------------------------------------------------------
      1  net-libs/zeromq              < 4.3.3                    >= 4.3.3
    
    Description
    ===========
    
    It was discovered that ZeroMQ does not properly handle connecting peers
    before a handshake is completed.
    
    Impact
    ======
    
    An unauthenticated remote attacker able to connect to a ZeroMQ
    endpoint, even with CURVE encryption/authentication enabled, can cause
    a Denial of Service condition.
    
    Workaround
    ==========
    
    There is no known workaround at this time.
    
    Resolution
    ==========
    
    All ZeroMQ users should upgrade to the latest version:
    
      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-libs/zeromq-4.3.3"
    
    References
    ==========
    
    [ 1 ] CVE-2020-15166
          https://nvd.nist.gov/vuln/detail/CVE-2020-15166
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     https://security.gentoo.org/glsa/202009-12
    
    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
    This email address is being protected from spambots. You need JavaScript enabled to view it. 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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