GLSA 200412-15: Ethereal: Multiple vulnerabilities
Posted on: 12/19/2004 06:20 PM

An Ethereal security update has been released for Gentoo Linux

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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
================

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Package / Vulnerable / Unaffected
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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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