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[ GLSA 200509-18 ] Qt: Buffer overflow in the included zlib library
From: Sune Kloppenborg Jeppesen <jaervosz () 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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