Vulnerability Note VU#864884

Ethereal contains multiple vulnerabilities in the IGAP protocol dissector

Original Release date: 24 Mar 2004 | Last revised: 25 Mar 2004

Overview

Ethereal contains multiple buffer overflows in the Internet Group Membership Authentication Protocol (IGAP) protocol dissector. These vulnerabilities could allow a remote, unauthenticated attacker to execute arbitrary code.

Description

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

Impact

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

Solution

Upgrade

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 IGAP protocol dissector by performing the following actions in Ethereal:

    1) Select Analyze->Enabled Protocols
    2) Disable the IGAP protocol dissector from the list by unchecking its "Status" checkbox

However, it is strongly encouraged to upgrade to version 0.10.3 or later.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
EtherealAffected-24 Mar 2004
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

Ethereal credits Stefan Esser for reporting these vulnerabilities.

This document was written by Damon Morda.

Other Information

  • CVE IDs: CAN-2004-0176
  • Date Public: 22 Mar 2004
  • Date First Published: 24 Mar 2004
  • Date Last Updated: 25 Mar 2004
  • Severity Metric: 9.82
  • Document Revision: 19

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