GLSA 200411-24: BNC: Buffer overflow vulnerability
Posted on: 11/16/2004 06:27 AM

A BNC security update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200411-24
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http://security.gentoo.org/
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Severity: High
Title: BNC: Buffer overflow vulnerability
Date: November 16, 2004
Bugs: #70674
ID: 200411-24

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Synopsis
=======

BNC contains a buffer overflow vulnerability that may lead to Denial of Service and execution of arbitrary code.

Background
=========

BNC (BouNCe) is an IRC proxy server.

Affected packages
================

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Package / Vulnerable / Unaffected
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1 net-irc/bnc < 2.9.1 >= 2.9.1

Description
==========

Leon Juranic discovered that BNC fails to do proper bounds checking when checking server response.

Impact
=====

An attacker could exploit this to cause a Denial of Service and potentially execute arbitary code with the permissions of the user running BNC.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All BNC users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/bnc-2.9.1"

References
=========

[ 1 ] BNC ChangeLog
http://gotbnc.com/changes.html
[ 2 ] LSS-2004-11-03
http://security.lss.hr/en/index.php?page=detailsID=LSS-2004-11-03

Availability
===========

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200411-24.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/2.0


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