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Ethereal contains multiple vulnerabilities in the EIGRP protocol dissector

Vulnerability Note VU#119876

Original Release Date: 2004-03-24 | Last Revised: 2004-03-25


Ethereal contains multiple vulnerabilities in the Enhanced Interior Gateway Routing Protocol (EIGRP) protocol dissector. These vulnerabilities could allow a remote, unauthenticated attacker to execute arbitrary code.


Ethereal is a network traffic analysis package. It includes the ability to decode packets containing EIGRP data. There are two buffer overflow vulnerabilities in the way the EIGRP protocol dissector decodes packets containing EIGRP data. These vulnerabilities could be exploited by a remote, unauthenticated attacker by sending a specially crafted EIGRP packet containing overly long IP address values. Exploitation of these vulnerabilities could result in arbitrary code execution.


A remote, unauthenticated attacker could execute arbitrary code on the vulnerable system.



Upgrade to version 0.10.3 or later.

Note: Ethereal is considered BETA software at this time.

Disable Dissector

If you are unable to upgrade to version 0.10.3 or later, you can disable the EIGRP protocol dissector by performing the following actions in Ethereal:

(for Ethereal versions 0.8.x and 0.9.x)
1) Select Edit->Protocols
2) Deselect the EIGRP protocol dissector from the list

(for Ethereal versions 0.10.x)
1) Select Analyze->Enabled Protocols
2) Disable the EIGRP protocol dissector from the list by unchecking its "Status" checkbox

Vendor Information


Ethereal Affected

Updated:  March 24, 2004



Vendor Statement

Please see the Ethereal Security Bulletin at

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

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Ethereal credits Stefan Esser for reporting these vulnerabilities.

This document was written by Damon Morda.

Other Information

CVE IDs: CVE-2004-0176
Severity Metric: 9.82
Date Public: 2004-03-22
Date First Published: 2004-03-24
Date Last Updated: 2004-03-25 15:13 UTC
Document Revision: 18

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