full-disclosure - [ GLSA 200606-22 ] aRts: Privilege escalation

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Message-ID: <200606222117.47878.jaervosz@gentoo.org>
Date: Thu Jun 22 20:39:16 2006
From: jaervosz at gentoo.org (Sune Kloppenborg Jeppesen)
Subject: [ GLSA 200606-22 ] aRts: Privilege escalation

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Gentoo Linux Security Advisory                           GLSA 200606-22
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                                            http://security.gentoo.org/
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  Severity: High
     Title: aRts: Privilege escalation
      Date: June 22, 2006
      Bugs: #135970
        ID: 200606-22

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Synopsis
========

The artswrapper part of aRts allows local users to execute arbitrary
code with elevated privileges.

Background
==========

aRts is a real time modular system for synthesizing audio used by KDE.
artswrapper is a helper application used to start the aRts daemon.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  kde-base/arts     < 3.5.2-r1                          >= 3.5.2-r1
                                                          *>= 3.4.3-r1

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

artswrapper fails to properly check whether it can drop privileges
accordingly if setuid() fails due to a user exceeding assigned resource
limits.

Impact
======

Local attackers could exploit this vulnerability to execute arbitrary
code with elevated privileges. Note that the aRts package provided by
Gentoo is only vulnerable if the artswrappersuid USE-flag is enabled.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All aRts users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose kde-base/arts

References
==========

  [ 1 ] CVE-2006-2916
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2916

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

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

  http://security.gentoo.org/glsa/glsa-200606-22.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 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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