[ GLSA 200509-18 ] Qt: Buffer overflow in the included zlib library

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 09/26/05

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    To: gentoo-announce@gentoo.org
Date: Mon, 26 Sep 2005 21:51:04 +0200

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    Gentoo Linux Security Advisory GLSA 200509-18
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: Qt: Buffer overflow in the included zlib library
          Date: September 26, 2005
          Bugs: #100683
            ID: 200509-18

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    Synopsis
    ========

    Qt is vulnerable to a buffer overflow which could potentially lead to
    the execution of arbitrary code.

    Background
    ==========

    Qt is a cross-platform GUI toolkit used by KDE.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 x11-libs/qt < 3.3.4-r8 >= 3.3.4-r8

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

    Qt links to a bundled vulnerable version of zlib when emerged with the
    zlib USE-flag disabled. This may lead to a buffer overflow.

    Impact
    ======

    By creating a specially crafted compressed data stream, attackers can
    overwrite data structures for applications that use Qt, resulting in a
    Denial of Service or potentially arbitrary code execution.

    Workaround
    ==========

    Emerge Qt with the zlib USE-flag enabled.

    Resolution
    ==========

    All Qt users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=x11-libs/qt-3.3.4-r8"

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

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

      http://security.gentoo.org/glsa/glsa-200509-18.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 2005 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/2.0

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