[ GLSA 200703-01 ] Snort: Remote execution of arbitrary code
Date: Fri, 2 Mar 2007 01:31:56 +0100
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200703-01 ] Snort: Remote execution of arbitrary code
Message-ID: <20070302003156.GF14157@falco.falcal.net.>
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Gentoo Linux Security Advisory GLSA 200703-01
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http://security.gentoo.org/
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Severity: High
Title: Snort: Remote execution of arbitrary code
Date: February 23, 2007
Bugs: #167730
ID: 200703-01
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Synopsis
========
The Snort DCE/RPC preprocessor contains a buffer overflow that could
result in the remote execution of arbitrary code.
Background
==========
Snort is a widely deployed intrusion detection program.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-analyzer/snort < 2.6.1.3 >= 2.6.1.3
Description
===========
The Snort DCE/RPC preprocessor does not properly reassemble certain
types of fragmented SMB and DCE/RPC packets.
Impact
======
A remote attacker could send specially crafted fragmented SMB or
DCE/RPC packets, without the need to finish the TCP handshake, that
would trigger a stack-based buffer overflow while being reassembled.
This could lead to the execution of arbitrary code with the permissions
of the user running the Snort preprocessor.
Workaround
==========
Disable the DCE/RPC processor by commenting 'preprocessor rpc_decode'
and 'include $RULE_PATH/rpc.rules' from /etc/snort/snort.conf .
Resolution
==========
All Snort users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/snort-2.6.1.3"
References
==========
[ 1 ] CVE-2006-5276
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5276
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200703-01.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 2007 Gentoo Foundation, 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/2.5
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