SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (Instant Messaging/IRC/Chat)  >   ngIRCd Vendors:   Barton, Alexander
(Gentoo Issues Fix) ngIRCd Buffer Overflow in Lists_MakeMask() Lets Remote Users Deny Service
SecurityTracker Alert ID:  1013050
SecurityTracker URL:  http://securitytracker.com/id/1013050
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jan 31 2005
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 0.8.2
Description:   A vulnerability was reported in ngIRCd. A remote user can cause the daemon to crash or potentially execute arbitrary code.

The vendor reported that a remote user can send specially crafted data to trigger a buffer overflow in ngIRCd. The flaw resides in the Lists_MakeMask() function in 'lists.c' and is caused by an integer underflow.

The vendor credits Florian Westphal with discovering this vulnerability.

Impact:   A remote user can cause the target ngIRCd daemon to crash or potentially execute arbitrary code.
Solution:   Gentoo has released a fix and indicates that all ngIRCd users should upgrade to the latest version:

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

Vendor URL:  arthur.ath.cx/~alex/ngircd/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Jan 31 2005 ngIRCd Buffer Overflow in Lists_MakeMask() Lets Remote Users Deny Service



 Source Message Contents

Subject:  [gentoo-announce] [ GLSA 200501-40 ] ngIRCd: Buffer overflow


This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
--------------enig84AD85F16A60FF032B688827
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

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

  Severity: High
     Title: ngIRCd: Buffer overflow
      Date: January 28, 2005
      Bugs: #79705
        ID: 200501-40

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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


--------------enig84AD85F16A60FF032B688827
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.6 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFB+reovcL1obalX08RAtzQAJ4vhoWfcE1nQGjB3bRNPf1P1sKJKgCbBNUB
4bagXEhzV6ZWAd86su9Lhr4=
=u1bY
-----END PGP SIGNATURE-----

--------------enig84AD85F16A60FF032B688827--

 
 


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2019, SecurityGlobal.net LLC