Gentoo: GLSA-201412-06: libxml2: Denial of Service

    Date10 Dec 2014
    CategoryGentoo
    47
    Posted ByLinuxSecurity Advisories
    A vulnerability in libxml2 could result in Denial of Service.
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    Gentoo Linux Security Advisory                           GLSA 201412-06
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                                                http://security.gentoo.org/
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     Severity: Normal
        Title: libxml2: Denial of Service
         Date: December 10, 2014
         Bugs: #525656
           ID: 201412-06
    
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    Synopsis
    ========
    
    A vulnerability in libxml2 could result in 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             < 2.9.2 >= 2.9.2
    
    Description
    ===========
    
    parser.c in libxml2 before 2.9.2 does not properly prevent entity
    expansion even when entity substitution has been disabled.
    
    Impact
    ======
    
    A context-dependent attacker could entice a user to a specially crafted
    XML file using an application linked against libxml2, possibly
    resulting in a Denial of Service condition.
    
    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/libxml2-2.9.2"
    
    Packages which depend on this library may need to be recompiled. Tools
    such as revdep-rebuild may assist in identifying these packages.
    
    References
    ==========
    
    [ 1 ] CVE-2014-3660
          http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3660
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     http://security.gentoo.org/glsa/glsa-201412-06.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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