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Gentoo Linux Security Advisory                           GLSA 200409-31
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: jabberd 1.x: Denial of Service vulnerability
      Date: September 23, 2004
      Bugs: #64741
        ID: 200409-31

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Synopsis
========

The jabberd server was found to be vulnerable to a remote Denial of
Service attack.

Background
==========

Jabber is a set of streaming XML protocols enabling message, presence,
and other structured information exchange between two hosts. jabberd is
the original implementation of the Jabber protocol server.

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

    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  net-im/jabberd      <= 1.4.3-r3                       >= 1.4.3-r4

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

Jose Antonio Calvo found a defect in routines handling XML parsing of
incoming data. jabberd 1.x may crash upon reception of invalid data on
any socket connection on which XML is parsed.

Impact
======

A remote attacker may send a specific sequence of bytes to an open
socket to crash the jabberd server, resulting in a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All jabberd users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=net-im/jabberd-1.4.3-r4"
    # emerge ">=net-im/jabberd-1.4.3-r4"

References
==========

  [ 1 ] Vulnerability disclosure
        http://www.jabber.org/pipermail/jabberd/2004-September/002004.html
  [ 2 ] Jabber announcement
        http://www.jabber.org/pipermail/jadmin/2004-September/018046.html

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

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

  http://security.gentoo.org/glsa/glsa-200409-31.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