[ GLSA 200410-13 ] BNC: Input validation flaw
Date: Fri, 15 Oct 2004 14:00:32 +0200
From: Thierry Carrez <koon@gentoo.org>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200410-13 ] BNC: Input validation flaw
Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com,
security-alerts@linuxsecurity.com
This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
--------------enigF5F72DC43AE556D04D726D28
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200410-13
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: BNC: Input validation flaw
Date: October 15, 2004
Bugs: #66912
ID: 200410-13
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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
--------------enigF5F72DC43AE556D04D726D28
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
iD8DBQFBb7vovcL1obalX08RAoFmAKCKWISwftiYtxNpbYKniP61rZBc0gCgh0Xy
o9bI9VNoRJraeXT4h+leONg=
=j/QL
-----END PGP SIGNATURE-----
--------------enigF5F72DC43AE556D04D726D28--
