[ GLSA 200411-21 ] Samba: Remote Denial of Service

[Matthias Geerdsen <vorlon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200411-21
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Samba: Remote Denial of Service
      Date: November 11, 2004
      Bugs: #70429
        ID: 200411-21

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Synopsis
========

An input validation flaw in Samba may allow a remote attacker to cause
a Denial of Service by excessive consumption of CPU cycles.

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       < 3.0.8                               >= 3.0.8
                                                                 < 3.0

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

An input validation flaw exists in ms_fnmatch.c when matching filenames
that contain wildcards.

Impact
======

A remote attacker may be able to cause an abnormal consumption of CPU
resources, resulting in slower performance of the server or even a
Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Samba users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-fs/samba-3.0.8"

References
==========

  [ 1 ] Samba Security Announcement
        http://www.samba.org/samba/security/CAN-2004-0930.html
  [ 2 ] CAN-2004-0930
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0930

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

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

  http://security.gentoo.org/glsa/glsa-200411-21.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.

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