Gentoo: GLSA-201409-08: libxml2: Denial of Service

    Date19 Sep 2014
    CategoryGentoo
    42
    Posted ByLinuxSecurity Advisories
    A vulnerability in libxml2 allows a remote attacker to cause Denial of Service.
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    Gentoo Linux Security Advisory                           GLSA 201409-08
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                                                http://security.gentoo.org/
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     Severity: Normal
        Title: libxml2: Denial of Service
         Date: September 19, 2014
         Bugs: #509834
           ID: 201409-08
    
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    Synopsis
    ========
    
    A vulnerability in libxml2 allows a remote attacker to cause Denial of
    Service.
    
    Background
    ==========
    
    libxml2 is the XML C parser and toolkit developed for the Gnome
    project.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package              /     Vulnerable     /            Unaffected
        -------------------------------------------------------------------
      1  dev-libs/libxml2            < 2.9.1-r4 >= 2.9.1-r4
    
    Description
    ===========
    
    A vulnerability in the xmlParserHandlePEReference() function of
    parser.c, when expanding entity references, can be exploited to consume
    large amounts of memory and cause a crash or hang.
    
    Impact
    ======
    
    A remote attacker may be able to cause Denial of Service via a
    specially crafted XML file containing malicious attributes.
    
    Workaround
    ==========
    
    There is no known workaround at this time.
    
    Resolution
    ==========
    
    All libxml2 users should upgrade to the latest version:
    
      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.1-r4"
    
    References
    ==========
    
    [ 1 ] CVE-2014-0191
          http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0191
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     http://security.gentoo.org/glsa/glsa-201409-08.xml
    
    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 2014 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.
    
    http://creativecommons.org/licenses/by-sa/2.5
    
    
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