-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.1147
          Vulnerability in Microsoft Exchange Server Could Allow
                        Denial of Service (2407132)
                             15 December 2010

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Exchange Server 2007 Service Pack 2
Publisher:         Microsoft
Operating System:  Windows Server 2003
                   Windows Server 2008
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-3937  

Original Bulletin: 
   http://www.microsoft.com/technet/security/Bulletin/MS10-106.mspx

- --------------------------BEGIN INCLUDED TEXT--------------------

Microsoft Security Bulletin MS10-106 - Moderate

Vulnerability in Microsoft Exchange Server Could Allow Denial of Service 
(2407132)

Version: 1.0

General Information

Executive Summary

  This security update resolves a privately reported vulnerability in Microsoft
  Exchange Server. The vulnerability could allow denial of service if an 
  authenticated attacker sent a specially crafted network message to a computer
  running the Exchange service. Firewall best practices and standard default 
  firewall configurations can help protect networks from attacks that originate
  outside the enterprise perimeter. Best practices recommend that systems that 
  are connected to the Internet have a minimal number of ports exposed.

  This security update is rated Moderate for Microsoft Exchange Server 2007 
  Service Pack 2 for x64-based Systems. For more information, see the 
  subsection, Affected and Non-Affected Software, in this section.

  The security update addresses the vulnerability by correcting the manner in 
  which the Exchange Server store processes RPC requests. For more information 
  about the vulnerability, see the Frequently Asked Questions (FAQ) subsection 
  for the specific vulnerability entry under the next section, Vulnerability 
  Information.

Affected Software

  Microsoft Exchange Server 2007 Service Pack 2 for x64-based Systems (2407132)

Vulnerability Information

Exchange Server Infinite Loop Vulnerability - CVE-2010-3937

  A denial of service vulnerability exists in the way that the Microsoft 
  Exchange store processes specially crafted RPC calls. The vulnerable code path
  is only accessible to authenticated users. An authenticated attacker could 
  exploit the vulnerability by sending a specially crafted network message to a
  computer running the Exchange service. An attacker who successfully exploited
  this vulnerability could cause the Exchange service to stop responding until 
  manually restarted.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: https://www.auscert.org.au/1967

iD8DBQFNCCya/iFOrG6YcBERAgOLAJ91m5XqBae7qJZLGb7wOWk7e8QnGwCgiAnP
8bCOZoguODrHn7Ch2Hu6FIM=
=1nCZ
-----END PGP SIGNATURE-----