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Gentoo Linux Security Advisory GLSA 200501-27
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http://security.gentoo.org/
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Severity: High
Title: Ethereal: Multiple vulnerabilities
Date: January 20, 2005
Bugs: #78559
ID: 200501-27

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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 < 0.10.9 >= 0.10.9

Description
==========

There are multiple vulnerabilities in versions of Ethereal earlier than 0.10.9, including:

* The COPS dissector could go into an infinite loop (CAN-2005-0006).

* The DLSw dissector could cause an assertion, making Ethereal exit prematurely (CAN-2005-0007).

* The DNP dissector could cause memory corruption (CAN-2005-0008).

* The Gnutella dissector could cause an assertion, making Ethereal exit prematurely (CAN-2005-0009).

* The MMSE dissector could free statically-allocated memory (CAN-2005-0010).

* The X11 dissector is vulnerable to a string buffer overflow (CAN-2005-0084).

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-0.10.9"

References
=========

[ 1 ] CAN-2005-0006
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0006
[ 2 ] CAN-2005-0007
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0007
[ 3 ] CAN-2005-0008
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0008
[ 4 ] CAN-2005-0009
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0009
[ 5 ] CAN-2005-0010
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0010
[ 6 ] CAN-2005-0084
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0084
[ 7 ] Ethereal Release Notes
http://www.ethereal.com/news/item_20050120_01.html

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

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

http://security.gentoo.org/glsa/glsa-200501-27.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 2005 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