[ GLSA 200501-40 ] ngIRCd: Buffer overflow

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200501-40
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                                            http://security.gentoo.org/
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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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