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Gentoo Linux Security Advisory                           GLSA 200501-40
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  Severity: High
     Title: ngIRCd: Buffer overflow
      Date: January 28, 2005
      Bugs: #79705
        ID: 200501-40

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Synopsis
========

ngIRCd is vulnerable to a buffer overflow that can be used to crash the
daemon and possibly execute arbitrary code.

Background
==========

ngIRCd is a free open source daemon for Internet Relay Chat (IRC).

Affected packages
=================

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  net-irc/ngircd       < 0.8.2                             >= 0.8.2

Description
===========

Florian Westphal discovered a buffer overflow caused by an integer
underflow in the Lists_MakeMask() function of lists.c.

Impact
======

A remote attacker can exploit this buffer overflow to crash the ngIRCd
daemon and possibly execute arbitrary code with the rights of the
ngIRCd daemon process.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ngIRCd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-irc/ngIRCd-0.8.2"

References
==========

  [ 1 ] ngIRCd Release Annoucement
        http://arthur.ath.cx/pipermail/ngircd-ml/2005-January/000228.html

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

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

  http://security.gentoo.org/glsa/glsa-200501-40.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 2005 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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