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Gentoo: Ethereal Multiple vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by Joe Shakespeare   
Gentoo Multiple vulnerabilities exist in Ethereal, which may allow an attacker to run arbitrary code, crash the program or perform DoS by CPU and disk utilization.

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Gentoo Linux Security Advisory                           GLSA 200412-15
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Ethereal: Multiple vulnerabilities
      Date: December 19, 2004
      Bugs: #74443
        ID: 200412-15

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Synopsis
========

Multiple vulnerabilities exist in Ethereal, which may allow an attacker
to run arbitrary code, crash the program or perform DoS by CPU and disk
utilization.

Background
==========

Ethereal is a feature rich network protocol analyzer.

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

    -------------------------------------------------------------------
     Package                /  Vulnerable  /                Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/ethereal      < 0.10.8                     >= 0.10.8

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

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

* Bug in DICOM dissection discovered by Bing could make Ethereal
  crash (CAN 2004-1139).

* An invalid RTP timestamp could make Ethereal hang and create a
  large temporary file (CAN 2004-1140).

* The HTTP dissector could access previously-freed memory (CAN
  2004-1141).

* Brian Caswell discovered that an improperly formatted SMB could
  make Ethereal hang (CAN 2004-1142).

Impact
======

An attacker might be able to use these vulnerabilities to crash
Ethereal, perform DoS by CPU and disk space utilization 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 version.

Resolution
==========

All ethereal users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-analyzer/ethereal-0.10.8"

References
==========

  [ 1 ] Ethereal enpa-sa-00016
        http://www.ethereal.com/appnotes/enpa-sa-00016.html
  [ 2 ] CAN 2004-1139
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1139
  [ 3 ] CAN 2004-1140
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1140
  [ 4 ] CAN 2004-1141
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1141
  [ 5 ] CAN 2004-1142
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1142

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

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

  http://security.gentoo.org/glsa/glsa-200412-15.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 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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