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Red Hat Linux Advisory: ethereal

Mar 31, 2004, 15:53 (0 Talkback[s])

Red Hat Security Advisory

Synopsis: Updated Ethereal packages fix security issues
Advisory ID: RHSA-2004:137-01
Issue date: 2004-03-31
Updated on: 2004-03-31
Product: Red Hat Linux
Cross references:
Obsoletes: RHSA-2004:001
CVE Names: CAN-2004-0176 CAN-2004-0365 CAN-2004-0367

1. Topic:

Updated Ethereal packages that fix various security vulnerabilities are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

Ethereal is a program for monitoring network traffic.

Stefan Esser reported that Ethereal versions 0.10.1 and earlier contain stack overflows in the IGRP, PGM, Metflow, ISUP, TCAP, or IGAP dissectors. On a system where Ethereal is being run a remote attacker could send malicious packets that could cause Ethereal to crash or execute arbitrary code. The Common Vulnerabilities and Exposures project ( has assigned the name CAN-2004-0176 to this issue.

Jonathan Heussser discovered that a carefully-crafted RADIUS packet could cause a crash. The Common Vulnerabilities and Exposures project ( has assigned the name CAN-2004-0365 to this issue.

Ethereal 0.8.13 to 0.10.2 allows remote attackers to cause a denial of service (crash) via a zero-length Presentation protocol selector. The Common Vulnerabilities and Exposures project ( has assigned the name CAN-2004-0367 to this issue.

Users of Ethereal should upgrade to these updated packages, which contain a version of Ethereal that is not vulnerable to these issues.

4. Solution:

Before applying this update, make sure all previously released errata relevant to your system have been applied.

Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command:


This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.

5. RPMs required:

Red Hat Linux 9:



6. Verification:

MD5 sum Package Name

50c70de14c55d5176ec163545cc49c25 9/en/os/SRPMS/ethereal-0.10.3-0.90.1.src.rpm
48670725bb0b0cd1370fa2819ac69360 9/en/os/i386/ethereal-0.10.3-0.90.1.i386.rpm
6aec3561d6598dd3af9e2e037aa41eee 9/en/os/i386/ethereal-gnome-0.10.3-0.90.1.i386.rpm

These packages are GPG signed by Red Hat for security. Our key is available from

You can verify each package with the following command:

rpm --checksig -v <filename>

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command:

md5sum <filename>

7. References:

8. Contact:

The Red Hat security contact is <>. More contact details at

Copyright 2004 Red Hat, Inc.