[Full-Disclosure] [ GLSA 200411-05 ] libxml2: Remotely exploitable buffer overflow

From: Thierry Carrez (koon_at_gentoo.org)
Date: 11/02/04

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    To: gentoo-announce@lists.gentoo.org
    Date: Tue, 02 Nov 2004 18:35:06 +0100
    
    
    

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    Gentoo Linux Security Advisory GLSA 200411-05
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                                                http://security.gentoo.org/
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      Severity: High
         Title: libxml2: Remotely exploitable buffer overflow
          Date: November 02, 2004
          Bugs: #69154
            ID: 200411-05

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    Synopsis
    ========

    libxml2 contains multiple buffer overflows which could lead to the
    execution of arbitrary code.

    Background
    ==========

    libxml2 is an XML parsing library written in C.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 dev-libs/libxml2 < 2.6.15 >= 2.6.15

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

    Multiple buffer overflows have been detected in the nanoftp and
    nanohttp modules. These modules are responsible for parsing URLs with
    ftp information, and resolving names via DNS.

    Impact
    ======

    An attacker could exploit an application that uses libxml2 by forcing
    it to parse a specially-crafted XML file, potentially causing remote
    execution of arbitrary code.

    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/libxml2-2.6.15"

    References
    ==========

      [ 1 ] BugTraq Advisory
            http://www.securityfocus.com/archive/1/379383
      [ 2 ] libxml2 ChangeLog
            http://www.xmlsoft.org/ChangeLog.html
      [ 3 ] CAN-2004-0989
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0989

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

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

      http://security.gentoo.org/glsa/glsa-200411-05.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
    security@gentoo.org or alternatively, you may file a bug at
    http://bugs.gentoo.org.

    License
    =======

    Copyright 2004 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/1.0

    
    

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