[36940] in bugtraq
[ GLSA 200410-13 ] BNC: Input validation flaw
daemon@ATHENA.MIT.EDU (Thierry Carrez)
Fri Oct 15 12:27:28 2004
Message-ID: <416FBBE0.5050401@gentoo.org>
Date: Fri, 15 Oct 2004 14:00:32 +0200
From: Thierry Carrez <koon@gentoo.org>
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To: gentoo-announce@gentoo.org
Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com,
security-alerts@linuxsecurity.com
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Gentoo Linux Security Advisory GLSA 200410-13
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http://security.gentoo.org/
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Severity: Normal
Title: BNC: Input validation flaw
Date: October 15, 2004
Bugs: #66912
ID: 200410-13
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Synopsis
========
BNC contains an input validation flaw which might allow a remote
attacker to issue arbitrary IRC related commands.
Background
==========
BNC is an IRC proxying server
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-irc/bnc < 2.8.9 >= 2.8.9
Description
===========
A flaw exists in the input parsing of BNC where part of the
sbuf_getmsg() function handles the backspace character incorrectly.
Impact
======
A remote user could issue commands using fake authentication
credentials and possibly gain access to scripts running on the client
side.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All BNC users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=net-irc/bnc-2.8.9"
# emerge ">=net-irc/bnc-2.8.9"
References
==========
[ 1 ] BNC Changes
http://www.gotbnc.com/changes.html#2.8.9
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200410-13.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 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/1.0
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