Operating System:

[WIN]

Published:

10 October 2007

Protect yourself against future threats.

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

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

                          ESB-2007.0765 -- [Win]
       MS07-058 - Vulnerability in RPC Could Allow Denial of Service
                              10 October 2007

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

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

Product:              Windows Vista
                      Windows Server 2003
                      Windows XP
                      Windows 2000
Publisher:            Microsoft
Operating System:     Windows
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-2228

Original Bulletin:  
  http://www.microsoft.com/technet/security/bulletin/ms07-058.mspx

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

Microsoft Security Bulletin MS07-058 - Important

Vulnerability in RPC Could Allow Denial of Service (933729)


Affected Software

   - Microsoft Windows 2000 Service Pack 4
   - Windows XP Service Pack 2
   - Windows XP Professional x64 Edition
   - Windows Server 2003 Service Pack 1 and Windows Server 2003 Service
     Pack 2
   - Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition
     Service Pack 2
   - Windows Server 2003 with SP1 for Itanium-based Systems and Windows
     Server 2003 with SP2 for Itanium-based Systems
   - Windows Vista
   - Windows Vista x64 Edition


Vulnerability Details

RPC Authentication Vulnerability Could Allow Denial of Service -
CVE-2007-2228

   A denial of service vulnerability exists in the remote procedure call
   (RPC) facility due to a failure in communicating with the NTLM security
   provider when performing authentication of RPC requests. An anonymous
   attacker could exploit the vulnerability by sending a specially crafted
   RPC authentication request to a computer over the network. An attacker
   who successfully exploited this vulnerability could cause the computer
   to stop responding and automatically restart.

Workarounds for RPC Authentication Vulnerability Could Allow Denial of
Service - CVE-2007-2228

   - Block the following at the firewall:
     - UDP ports 135, 137, 138, and 445, and TCP ports 135, 139, 445, and 593
     - All unsolicited inbound traffic on ports greater than 1024
     - Any other specifically configured RPC port

   - To help protect from network-based attempts to exploit this
     vulnerability, use a personal firewall, such as Windows Firewall,
     which is included with Windows XP and with Windows Server 2003.

   - To help protect from network-based attempts to exploit this
     vulnerability, enable advanced TCP/IP filtering on systems that
     support this feature.

   - To help protect from network-based attempts to exploit this
     vulnerability, block the affected ports by using IPSec on the affected
     systems.


- --------------------------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

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
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: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBRwwc9ih9+71yA2DNAQLNpAP+IEUpd10fnKd7K0t7TlsAhPIxptQXHo2j
nhINypdHCcYNbX4DacZ1dHzGRhf8Fja1TY7CnOgLh6BMd5oYDXXsdxXqce66EMmC
yG1ZKaa9qRj4HO0+O15POFptXlxCQBW24OOUWsnT3ObskaFmYqSn/bM4bwAgIVh0
8hfMfz5QbSA=
=ePcC
-----END PGP SIGNATURE-----