ERRATA: [ GLSA 200409-14 ] Samba: Remote printing non-vulnerability

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 09/10/04

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    To: gentoo-announce@gentoo.org
Date: Fri, 10 Sep 2004 14:21:21 +0200

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    Gentoo Linux Security Advisory [ERRATA UPDATE] GLSA 200409-14:02
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                                                http://security.gentoo.org/
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      Severity: Low
         Title: Samba: Remote printing non-vulnerability
          Date: September 10, 2004
          Bugs: #62476
            ID: 200409-14:02

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    Errata
    ======

    This advisory incorrectly described Samba versions as being vulnerable
    to a remote denial of service. After further verifications, it appears
    that a remote user can only deny service to himself, so this bug does
    not induce any security issue at all. The corrected sections appear
    below.

    Synopsis
    ========

    Samba has a bug with out of sequence print change notification
    requests, but it cannot be used to perform a remote denial of service
    attack.

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

    There are no affected packages.

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

    Due to a bug in the printer_notify_info() function, authorized users
    could potentially crash their smbd process 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
    ======

    We incorrectly thought that this bug could be exploited to deny service
    to all Samba users. It is not the case, this bug has no security impact
    whatsoever. Many thanks to Jerry Carter from the Samba team for
    correcting our mistake.

    Workaround
    ==========

    There is no need for a workaround.

    Resolution
    ==========

    Samba users can keep their current versions.

    References
    ==========

      [ 1 ] Samba Release Notes
            http://samba.org/samba/history/samba-3.0.6.html
      [ 2 ] Samba Bug #1520
            https://bugzilla.samba.org/show_bug.cgi?id=1520

    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@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
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    Relevant Pages

    • [Full-Disclosure] ERRATA: [ GLSA 200409-14 ] Samba: Remote printing non-vulnerability
      ... This advisory incorrectly described Samba versions as being vulnerable ... Samba has a bug with out of sequence print change notification ... handled print change notification requests in an invalid order. ... this bug has no security impact ...
      (Full-Disclosure)
    • ERRATA: [ GLSA 200409-14 ] Samba: Remote printing non-vulnerability
      ... This advisory incorrectly described Samba versions as being vulnerable ... Samba has a bug with out of sequence print change notification ... handled print change notification requests in an invalid order. ... this bug has no security impact ...
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