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Home » Hacking News » RedHat RHSA-2003:076-01: Ethereal multiple vulnerabilities

RedHat RHSA-2003:076-01: Ethereal multiple vulnerabilities

by Nikola Strahija on April 24th, 2003 Format string and heap-based buffer overflow vulnerabilities have been found in Ethereal, which could lead to denial-of-service attack.

Red Hat Security Advisory

Synopsis: Updated ethereal packages fix security vulnerabilities
Advisory ID: RHSA-2003:076-01
Issue date: 2003-04-23
Updated on: 2003-04-23
Product: Red Hat Linux
Cross references:
Obsoletes: RHSA-2002:290
CVE Names: CAN-2003-0081 CAN-2003-0159

1. Topic:

Updated ethereal packages are now available which fix a format string
bug and a heap-based buffer overflow.

2. Relevant releases/architectures:

Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
Red Hat Linux 8.0 - i386
Red Hat Linux 9 - i386

3. Problem description:

Ethereal is a package designed for monitoring network traffic on your

Ethereal 0.9.9 and earlier allows remote attackers to cause a denial
of service (crash) and possibly execute arbitrary code via carefully
crafted SOCKS packets. Red Hat would like to thank Georgi Guninski for
reporting this issue.

Additionally, a heap-based buffer overflow in the NTLMSSP code for Ethereal
0.9.9 and earlier allows remote attackers to cause a denial of service and
possibly execute arbitrary code.

Users of Ethereal should update to the erratum packages containing Ethereal
version 0.9.11 which are not vulnerable to these issues.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. 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 7.2:




Red Hat Linux 7.3:



Red Hat Linux 8.0:



Red Hat Linux 9:



6. Verification:

MD5 sum Package Name
89898ad3538a3df96c71b58ebb813837 7.2/en/os/SRPMS/ethereal-0.9.11-1.72.1.src.rpm
bb344359597ccb7615cdc0af649cfc71 7.2/en/os/i386/ethereal-0.9.11-1.72.1.i386.rpm
c2a337a3d0670a261ed9716849a55c2c 7.2/en/os/i386/ethereal-gnome-0.9.11-1.72.1.i386.rpm
6713d547a4fa764702db39acc1905cb9 7.2/en/os/ia64/ethereal-0.9.11-1.72.1.ia64.rpm
f1370888122b91b3393698b4ba102254 7.2/en/os/ia64/ethereal-gnome-0.9.11-1.72.1.ia64.rpm
d10c8fd89468d8ce2c041ae4c325c947 7.3/en/os/SRPMS/ethereal-0.9.11-1.73.0.src.rpm
87509fd61fbc23186ac9b7184e1ec504 7.3/en/os/i386/ethereal-0.9.11-1.73.0.i386.rpm
024a5676609dd20946d5ffb44e3a1a4f 7.3/en/os/i386/ethereal-gnome-0.9.11-1.73.0.i386.rpm
852e037f04e4cefa9a13b8d1b78b022c 8.0/en/os/SRPMS/ethereal-0.9.11-1.80.0.src.rpm
dc86fd356f25c613b39925f27773df73 8.0/en/os/i386/ethereal-0.9.11-1.80.0.i386.rpm
25392c93d3c66f7d73fee99a8a377ccd 8.0/en/os/i386/ethereal-gnome-0.9.11-1.80.0.i386.rpm
47a604a2823bca19f9e5b4cbc52310a9 9/en/os/SRPMS/ethereal-0.9.11-0.90.1.src.rpm
9587d1e2f30eb4f87323c3224bb434a2 9/en/os/i386/ethereal-0.9.11-0.90.1.i386.rpm
1999cc86871e8698b0267c40cb9e856f 9/en/os/i386/ethereal-gnome-0.9.11-0.90.1.i386.rpm

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

You can verify each package with the following command:

rpm --checksig -v

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


7. References:

8. Contact:

The Red Hat security contact is . More contact
details at

Copyright 2003 Red Hat, Inc.

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