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Category:   Application (Generic)  >   Qt Vendors:   Trolltech
(Gentoo Issues Fix) Qt May Let Local Users Execute Arbitrary Code Via Shared Libraries
SecurityTracker Alert ID:  1013342
SecurityTracker URL:  http://securitytracker.com/id/1013342
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Mar 1 2005
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Qt. A local user may be able to cause arbitrary code to be executed.

Qt searches for shared libraries based on the RPATH value specified at build time. Depending on the build path, a local user may be able to create or modify a shared library used by Qt so that when a target user runs a Qt application, the modified library is loaded.

A local user may be able to exploit this to cause Qt applications to execute arbitrary code with the privileges of the target user.

Impact:   A local user may be able to cause arbitrary code to be executed with the privileges of the target user.
Solution:   Gentoo has released a fix and indicates that all Qt users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-libs/qt-3.3.4-r2"

Vendor URL:  www.trolltech.com/ (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Mar 1 2005 Qt May Let Local Users Execute Arbitrary Code Via Shared Libraries



 Source Message Contents

Subject:  [gentoo-announce] [ GLSA 200503-01 ] Qt: Untrusted library search path


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Gentoo Linux Security Advisory                           GLSA 200503-01
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Qt: Untrusted library search path
      Date: March 01, 2005
      Bugs: #75181
        ID: 200503-01

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Synopsis
========

Qt may load shared libraries from an untrusted, world-writable
directory, resulting in 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-r2                            >= 3.3.4-r2

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

Tavis Ormandy of the Gentoo Linux Security Audit Team has discovered
that Qt searches for shared libraries in an untrusted, world-writable
directory.

Impact
======

A local attacker could create a malicious shared object that would be
loaded by Qt, resulting in the execution of arbitrary code with the
privileges of the Qt application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Qt users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=x11-libs/qt-3.3.4-r2"

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

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

  http://security.gentoo.org/glsa/glsa-200503-01.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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