[ GLSA 200704-20 ] NAS: Multiple vulnerabilities

[Raphael Marichez <falco () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200704-20
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                                            http://security.gentoo.org/
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  Severity: High
     Title: NAS: Multiple vulnerabilities
      Date: April 23, 2007
      Bugs: #171428
        ID: 200704-20

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Synopsis
========

The Network Audio System is vulnerable to a buffer overflow that could
result in the execution of arbitrary code with root privileges.

Background
==========

NAS is a network transparent, client/server audio transport system.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  media-libs/nas       < 1.8b                               >= 1.8b

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

Luigi Auriemma has discovered multiple vulnerabilities in NAS, some of
which include a buffer overflow in the function accept_att_local(), an
integer overflow in the function ProcAuWriteElement(), and a null
pointer error in the function ReadRequestFromClient().

Impact
======

An attacker having access to the NAS daemon could send an overly long
slave name to the server, leading to the execution of arbitrary code
with root privileges. A remote attacker could also send a specially
crafted packet containing an invalid client ID, which would crash the
server and result in a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All NAS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/nas-1.8b"

References
==========

  [ 1 ] CVE-2007-1543
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1543
  [ 2 ] CVE-2007-1544
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1544
  [ 3 ] CVE-2007-1545
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1545
  [ 4 ] CVE-2007-1546
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1546
  [ 5 ] CVE-2007-1547
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1547

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

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

  http://security.gentoo.org/glsa/glsa-200704-20.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 2007 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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