(Gentoo Issues Fix) Ethereal SIP, AIM, SPNEGO, and MMSE Dissector Flaws Allow Remote Users to Crash Ethereal or Execute Arbitrary Code
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SecurityTracker Alert ID: 1010405 |
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SecurityTracker URL: http://securitytracker.com/id/1010405
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Jun 5 2004
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Impact:
Denial of service via network, Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 0.9.8 up to and including 0.10.3
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Description:
Several vulnerabilities were reported in Ethereal, affecting the SIP, AIM, SPNEGO, and MMSE dissectors. A remote user can cause denial of service conditions or execute arbitrary code on the target system.
The vendor reported that several protocol dissectors contain flaws that may allow a remote user to cause Ethereal to crash or to execute arbitrary code.
It is reported that a remote user can send a SIP packet that will, under certain conditions, cause Ethereal to crash [CVE: CAN-2004-0504]. Only version 0.10.3 is affected, the report said. Details on the conditions required to trigger the flaw are provided at:
http://www.ethereal.com/lists/ethereal-users/200405/msg00018.html
It is also reported that a remote user can cause the AIM dissector to throw an assertion and cause Ethereal to crash [CVE: CAN-2004-0505]. Only version 0.10.3 is affected, the report said.
It is also reported that a remote user can trigger a null pointer dereference in the SPNEGO dissector and cause Ethereal to crash [CVE: CAN-2004-0506].
It is also reported that there is a buffer overflow in the MMSE dissector [CVE: CAN-2004-0507]. Versions 0.10.1 to 0.10.3 are affected. A remote user can cause arbitrary code to be executed by the Ethereal process.
These flaws can be triggered by a remote user sending malformed traffic through a network that is monitored by Ethereal, via a malformed packet trace file, or via a malformed color filter file.
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Impact:
A remote user can cause Ethereal to crash. A remote user can cause Ethereal to execute arbitrary code with the privileges of the Ethereal process.
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Solution:
Gentoo has released a fix and indicates that all Ethereal users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-analyzer/ethereal-0.10.4"
# emerge ">=net-analyzer/ethereal-0.10.4"
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Vendor URL: www.ethereal.com/appnotes/enpa-sa-00014.html (Links to External Site)
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Cause:
Boundary error, Input validation error
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Underlying OS:
Linux (Gentoo)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Fri, 04 Jun 2004 21:30:59 +0200
Subject: [gentoo-announce] [ GLSA 200406-01 ] Ethereal: Multiple security problems
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
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Gentoo Linux Security Advisory GLSA 200406-01
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http://security.gentoo.org/
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Severity: High
Title: Ethereal: Multiple security problems
Date: June 04, 2004
Bugs: #51022
ID: 200406-01
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Synopsis
========
Multiple vulnerabilities including one buffer overflow exist in
Ethereal, which may allow an attacker to run arbitrary code or crash
the program.
Background
==========
Ethereal is a feature rich network protocol analyzer.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-analyzer/ethereal <= 0.10.3 >= 0.10.4
Description
===========
There are multiple vulnerabilities in versions of Ethereal earlier than
0.10.4, including:
* A buffer overflow in the MMSE dissector.
* Under specific conditions a SIP packet could make Ethereal crash.
* The AIM dissector could throw an assertion, causing Ethereal to
crash.
* The SPNEGO dissector could dereference a null pointer, causing a
crash.
Impact
======
An attacker could use these vulnerabilities to crash Ethereal or even
execute arbitrary code with the permissions of the user running
Ethereal, which could be the root user.
Workaround
==========
For a temporary workaround you can disable all affected protocol
dissectors by selecting Analyze->Enabled Protocols... and deselecting
them from the list. However, it is strongly recommended to upgrade to
the latest stable release.
Resolution
==========
All Ethereal users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-analyzer/ethereal-0.10.4"
# emerge ">=net-analyzer/ethereal-0.10.4"
References
==========
[ 1 ] Ethereal enpa-sa-00014
http://www.ethereal.com/appnotes/enpa-sa-00014.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200406-01.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 Gentoo Technologies, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/1.0
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