full-disclosure - [ GLSA 200409-14 ] Samba: Remote printing vulnerability

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From: jaervosz at gentoo.org (Sune Kloppenborg Jeppesen)
Subject: [ GLSA 200409-14 ] Samba: Remote printing vulnerability

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Gentoo Linux Security Advisory                           GLSA 200409-14
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Samba: Remote printing vulnerability
      Date: September 09, 2004
      Bugs: #62476
        ID: 200409-14

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Synopsis
========

Samba is vulnerable to a remote denial of service attack due to out of
sequence print change notification requests.

Background
==========

Samba is a freely available SMB/CIFS implementation which allows
seamless interoperability of file and print services to other SMB/CIFS
clients.

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

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  net-fs/samba       < 3.0.6                               >= 3.0.6

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

Due to a bug in the printer_notify_info() function, authorized users
could potentially crash the Samba server by sending improperly handled
print change notification requests in an invalid order. Windows XP SP2
clients can trigger this behavior by sending a
FindNextPrintChangeNotify() request before previously sending a
FindFirstPrintChangeNotify() request.

Impact
======

A remote authorized user could potentially crash a Samba server after
issuing these out of sequence requests.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Samba users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=net-fs/samba-3.0.6"
    # emerge ">=net-fs/samba-3.0.6"

References
==========

  [ 1 ] Samba Release Notes
        http://samba.org/samba/history/samba-3.0.6.html
  [ 2 ] BugTraq Advisory
        http://www.securityfocus.com/archive/1/373619

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

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

  http://security.gentoo.org/glsa/glsa-200409-14.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@...too.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
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