[ GLSA 200406-01 ] Ethereal: Multiple security problems

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200406-01
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Ethereal: Multiple security problems
      Date: June 04, 2004
      Bugs: #51022
        ID: 200406-01

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Synopsis
========

Multiple vulnerabilities including one buffer overflow exist in
Ethereal, which may allow an attacker to run arbitrary code or crash
the program.

Background
==========

Ethereal is a feature rich network protocol analyzer.

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

    -------------------------------------------------------------------
     Package                /   Vulnerable   /              Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/ethereal       <= 0.10.3                   >= 0.10.4

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

There are multiple vulnerabilities in versions of Ethereal earlier than
0.10.4, including:

* A buffer overflow in the MMSE dissector.

* Under specific conditions a SIP packet could make Ethereal crash.

* The AIM dissector could throw an assertion, causing Ethereal to
  crash.

* The SPNEGO dissector could dereference a null pointer, causing a
  crash.

Impact
======

An attacker could use these vulnerabilities to crash Ethereal or even
execute arbitrary code with the permissions of the user running
Ethereal, which could be the root user.

Workaround
==========

For a temporary workaround you can disable all affected protocol
dissectors by selecting Analyze->Enabled Protocols... and deselecting
them from the list. However, it is strongly recommended to upgrade to
the latest stable release.

Resolution
==========

All Ethereal users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=net-analyzer/ethereal-0.10.4"
    # emerge ">=net-analyzer/ethereal-0.10.4"

References
==========

  [ 1 ] Ethereal enpa-sa-00014
        http://www.ethereal.com/appnotes/enpa-sa-00014.html

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

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

     http://security.gentoo.org/glsa/glsa-200406-01.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 2004 Gentoo Technologies, 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/1.0

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