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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@g.o 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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