[ GLSA 200703-01 ] Snort: Remote execution of arbitrary code
--tEFtbjk+mNEviIIX
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200703-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: Snort: Remote execution of arbitrary code
Date: February 23, 2007
Bugs: #167730
ID: 200703-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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
--tEFtbjk+mNEviIIX
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
iQEVAwUBRedwfDvRww8BFPxFAQIhZAf9HG+L93pAkzsGulGroxV3NBbn50sDkLsN
6KNUzFirWastU571+5BQKcKgZWrk69/ltmKPBUeM2/67MMgYb8CbIMZNW1+QRzXf
RJsjfama5qWnPD/ag5HseM8whRJBbaGeDOtWSJKbSrfbJt8UpJgfUon8e5IKPSlv
pOkNn/RbFfb1b6G7Nasg87xOCRVKwGKaagvGVWuvPn8pQzSh04a5Ngu8QQldavHF
xxRNsIp59RhRq+wwHMWzUsoDeJbQ0w1GGHUu0GF9BQJ45QK+ZI50JrVPl+GxelZV
Zu+Kn1IJ4rzyRBo0qI9m5QI6ctYmYgjqVn1TtCGwpKsttdTK1F0BNA==
=UuIG
-----END PGP SIGNATURE-----
--tEFtbjk+mNEviIIX--