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UNIRAS Brief - 495/04 - Gentoo Linux Security Advisory [ERRATA UPDATE] GLSA 200409-14:02
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UNIRAS (UK Govt CERT) Briefing Notice - 495/04 dated 13.09.04 Time: 10:50
UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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UNIRAS material is also available from its website at www.uniras.gov.uk and
Information about NISCC is available from www.niscc.gov.uk
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Title
=====
Gentoo Linux Security Advisory [ERRATA UPDATE] GLSA 200409-14:02
Detail
======
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.
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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@xxxxxxxxxx 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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UNIRAS wishes to acknowledge the contributions of Gentoo for the information
contained in this Briefing.
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This Briefing contains the information released by the original author. Some
of the information may have changed since it was released. If the vulnerability
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<End of UNIRAS Briefing>
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