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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2009.0026 -- AUSCERT ALERT
                              [Win][Mac][OSX]
     Microsoft Bulletin Notification - April Pre-release Announcement
                               14 April 2009

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        AusCERT Alert Summary
        ---------------------

Product:              Windows 2000
                      Windows XP
                      Windows Server 2003
                      Windows Vista
                      Windows Server 2008
                      Internet Explorer
                      Excel
                      Internet Security and Acceleration Server
Operating System:     Windows
                      Mac OS X
Impact:               Execute Arbitrary Code/Commands
                      Increased Privileges
                      Denial of Service
Access:               Remote/Unauthenticated
Member content until: Wednesday, April 15 2009

OVERVIEW:

       Microsoft will be releasing critical security patches for April
       for their products on Wednesday 15 April 2009 at:

       4:00 am AEST (ACT, NSW, Queensland, Tasmania, Victoria)
       3:30 am ACST (SA)
       3:30 am ACST (NT)
       2:00 am AWST (WA)

       Further details are available from the Microsoft web site. [1,2]


DETAILS:

       Microsoft will be releasing eight security bulletins:

       Critical:
           - Three for Windows
           - One for Internet Explorer
           - One for Excel

       Important:
           - One for Windows
           - One for Internet Security and Acceleration Server

       Moderate:
           - One for Windows


MITIGATION:

       AusCERT advises that system administrators consider patching their
       machines as quickly as possible following their release by Microsoft.
       Bulletin information will be available from the Microsoft web site
       soon after their release, and AusCERT will be distributing bulletins
       to AusCERT members on Wednesday.

       Historically, exploits targeting Microsoft vulnerabilities are
       released in the days immediately following their announcement, so it
       is critical that system administrators apply patches or mitigate
       vulnerabilities as quickly as possible.


REFERENCES:

       [1] Microsoft Security Bulletin Advance Notification
           http://www.microsoft.com/technet/security/bulletin/advance.mspx
       
       [2] Microsoft Security Bulletin Advance Notification for April 2009
           http://www.microsoft.com/technet/security/Bulletin/MS09-apr.mspx

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. 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.

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

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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.
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