[26878] in bugtraq
Potential issue with Ethereal
daemon@ATHENA.MIT.EDU (Jonas Eriksson)
Fri Aug 30 16:14:05 2002
Date: Fri, 30 Aug 2002 20:30:52 +0200 (CEST)
From: Jonas Eriksson <je@sekure.net>
To: bugtraq@securityfocus.com
Message-ID: <Pine.BSO.4.44.0208302027590.13096-100000@birdie.sekure.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
From the ethereal page,
http://www.ethereal.com/appnotes/enpa-sa-00006.html
SUMMARY
Name: Potential issue with Ethereal 0.9.5
Docid: enpa-sa-00006
Date: August 20, 2002
Severity: High
DETAILS
Description:
The ISIS protocol dissector in Ethereal 0.9.5 and earlier versions is
susceptible to a buffer overflow. In order to determine which version of
Ethereal you have installed, do one of the following:
Load Ethereal and go to the Help->About Ethereal... menu item.
From the command line run
ethereal -vor
tethereal -v(the "v" is lowercase").
Either action will display the the application version along with the
libraries that Ethereal and Tethereal are linked with. If version "0.9.5"
or prior is displayed, the application is susceptible.
Impact:
It may be possible to make Ethereal crash or hang by injecting a
purposefully malformed packet onto the wire, or by convincing someone to
read a malformed packet trace file. It may be possible to make Ethereal
run arbitrary code by exploiting the buffer and pointer problems.
Resolution:
Upgrade to 0.9.6.
If you are running a version prior to 0.9.6, you can disable the ISIS
protocol dissector by selecting Edit->Protocols... and deselecting "isis"
from the list.
Regards,
Jonas Eriksson
