RE: MS Security Bulletin
- From: "Mulnick, Al" <Al.Mulnick@xxxxxxxxxx>
- To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
- Date: Thu, 16 Oct 2003 11:02:08 -0400
Sorry. Any host that accepts messages from the internet (more precisely for
this purpose, any host that accepts SMTP/ESMTP verbs from untrusted hosts
presumably outside your protected network).
-----Original Message-----
From: Dee Arnold [mailto:Deea@xxxxxxxx]
Sent: Thursday, October 16, 2003 10:56 AM
To: [ExchangeList]
Subject: [exchangelist] RE: MS Security Bulletin
http://www.MSExchange.org/
Excuse my question, could you define "internet facing host"?
-----Original Message-----
From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx]
Sent: Thursday, October 16, 2003 9:52 AM
To: [ExchangeList]
Subject: [exchangelist] RE: MS Security Bulletin
http://www.MSExchange.org/
I think you have your answer below: authentication could interrupt the flow
of mail from outside hosts that don't belong to your organization (as in all
of the internet).
The workaround is only good if this is not an internet facing host. If it
is, it's not a valid workaround.
Al
-----Original Message-----
From: Dee Arnold [mailto:Deea@xxxxxxxx]
Sent: Thursday, October 16, 2003 9:49 AM
To: [ExchangeList]
Subject: [exchangelist] RE: MS Security Bulletin
http://www.MSExchange.org/
They have a workaround for this one, but it looks like it could affect
incoming email (or my field users using SMTP). I'll take a look at applying
the patch, but since I'm going on vacation for a week starting tomorrow, I'm
concerned with leaving problems with my backup...What do you think -- patch
or workaround? I have exchange 2000 SP3.
Workaround:
To require SMTP authentication on an Exchange 2000 server:
Start Exchange System Manager.
Locate the server in the organization tree.
Expand the Protocols container for the server.
Expand the SMTP container.
For each SMTP virtual server:
Open the properties and of the virtual server object.
Click the Access properties page.
Click the Authentication button.
Clear the "Anonymous Access" checkbox.
Click OK to accept the change.
To require SMTP authentication on an Exchange 5.5 server:
To require authentication for inbound connections:
Click the Connections page.
In the "Accept Connections" Section, mark the radio button for "Only from
hosts using Authentication."
Impact of Workaround: Because most of the SMTP servers on the Internet only
support Anonymous Authentication, inbound sessions from external SMTP
servers will be affected.
-----Original Message-----
From: Joshua M. Etterman [mailto:jetterman@xxxxxxxxxxxxxxxxxxxxxxxxxxxx]
Sent: Wednesday, October 15, 2003 4:27 PM
To: [ExchangeList]
Subject: [exchangelist] MS Security Bulletin
AD: Get Thawte's New Step-by-Step SSL Guide for MSIIS:
http://www.msexchange.org/thawte/
I'm sure everyone else has gotten this, but thought I'd post it FYI!
-----BEGIN PGP SIGNED MESSAGE-----
- --------------------------------------------------------------------
Title: Microsoft Exchange Server Security Bulletin Summary for
October 2003
Issued: October 15, 2003
Version Number: 1.0
Bulletin: http://www.microsoft.com/technet/security/excoct03.asp
- --------------------------------------------------------------------
Summary:
========
Included in this advisory are updates for two newly discovered
vulnerabilities in Microsoft Exchange Server. These vulnerabilities,
broken down by severity are:
\\Critical Security Bulletins\\
MS03-046 - Vulnerability in Exchange Server could allow
Arbitrary Code Execution (829436)
- Affected Software:
- Exchange Server 5.5
- Exchange 2000 Server
- Impact: Remote Code Execution
- Version Number: 1.0
\\Moderate Security Bulletins\\
MS03-047 - Vulnerability in Exchange Server 5.5 Outlook Web
Access Could Allow Cross-Site Scripting Attack
(828489)
- Affected Software:
- Exchange Server 5.5
- Impact: Remote Code Execution
- Version Number: 1.0
Patch Availability:
===================
Patches are available to fix these vulnerabilities.
For additional information, including Technical Details,
Workarounds, answers to Frequently Asked Questions, and Patch
Deployment Information please read the Microsoft Exchange
Security Bulletin Summary for October at:
http://www.microsoft.com/technet/security/excoct03.asp
Acknowledgments:
================
Microsoft thanks the following for working with us to protect
customers:
- - João Gouveia (joao.gouveia@xxxxxxxxxxxx) for reporting the issue
described in MS03-046.
- - Ory Segal of Sanctum Inc. (http://www.sanctuminc.com/) for reporting
the issue described in MS03-047.
Support:
========
Technical support is available from Microsoft Product Support
Services at 1-866-PCSAFETY. There is no charge for support calls
associated with security patches.
Revisions:
==========
* V1.0 October 15, 2003: Bulletin Created.
********************************************************************
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---
Joshua M. Etterman
Complete College Solutions
CCS Financial Corporation
513 W. Chocolate Avenue
Hershey, PA 17033
Phone: (717) 508-2000
Fax: (717) 508-2001
Email: jetterman@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Get Thawte's New Step-by-Step SSL Guide for MSIIS
Find out how to test, purchase, and install a Thawte Digital Certificate on
your MSIIS web server:
http://www.msexchange.org/thawte/
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