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AA-2007.0124                  AUSCERT Advisory

                                   [Win]
 A vulnerability in Microsoft Access may allow execution of arbitrary code
                             11 December 2007
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        AusCERT Advisory Summary
        ------------------------

Product:              Microsoft Access
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
Member content until: Tuesday, January 08 2008

OVERVIEW

        Microsoft Access contains a buffer overflow which may result in
        the execution of arbitrary code when opening a specially crafted
        Access database file. [1]

        It has been reported that this vulnerability is being actively
        exploited in the wild.


IMPACT

        If a user were to open a malicious Access file (such as an .mdb
        database file), arbitrary code of an attacker's choosing could be
        executed on the user's system without prompting.


MITIGATION

        No patch is available to fix this problem at the time of writing.

        Microsoft Access files are already considered 'high-risk', and so
        should always be treated with care. Never open an unexpected 
        Access file or an Access file from an unknown source.


REFERENCES

        [1] US-CERT Current Activity
            http://www.us-cert.gov/current/index.html#microsoft_access_database_file_attachment

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

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